Advertisements
Advertisements
प्रश्न
Find the fourth term of the proportion whose first, second, and third terms are 18, 27, and 32 respectively.
उत्तर
Let the fourth term = x
18 : 27 : : 32 : x
⇒ 18 × x = 27 × 32
⇒ x = `(27xx32)/18` = 3 × 16 = 48
Fourth term = 48
APPEARS IN
संबंधित प्रश्न
If 2a = 3b and 4b = 5c, find: a : c.
If a : b = 3 : 5, find: (10a + 3b) : (5a + 2b)
If (3x-4) : (2x+5) is the duplicate ratio of 3 : 4 , find x.
A bag contains Rs 1800 in the form of Rs 1 , Rs 2 and Rs 5 ooins. The ratio of the number of the respective coins is 3: 7: 11. Find the total number of ooi ns in the bag.
If b is the mean proportion between a and c, show that:
`("a"^4 + "a"^2"b"^2 + "b"^4)/("b"^4 + "b"^2"c"^2 +"c"^4) = "a"^2/"c"^2`
The strength of a class is 65, including 30 girls. Find the ratio of the number of:
(i) girls to boys
(ii) boys to the whole class
(iii) the whole class to girls
The ages of two boys A and B are 6 years 8 months and 7 years 4 months respectively. Divide Rs. 3,150 in the ratio of their ages.
Is divided between A and B in such a way that A gets half of B. Find :
(i) the ratio between the shares of A and B.
(ii) the share of A and the share of B.
Reduce the following ratio to their lowest term:
3 years 4 months : 5 years 5 months.
₹120 is to be divided between Hari and Gopi in the ratio 5 : 3. How much does each get?
If `(2"y"+5"x")/(3"y"-5"x")=2 1/2`, find x : y
Find the value of x of the following such that the given numbers are in proportion.
45, 135, 90 and x
Find the ratio of the first quantity to the second.
15 minutes, 1 hour
Find the compounded ratio of: (a – b) : (a + b), (a + b)2 : (a2 + b2) and (a4 – b4) : (a2 – b2)2
If A: B = `(1)/(4) : (1)/(5)` and B : C = `(1)/(7) : (1)/(6)`, find A : B : C.
If `x/a = y/b = z/c`, prove that `(3x^3 - 5y^3 + 4c^3)/(3a^3 - 5b^3 + 4c^3) = ((3x - 5y + 4c)/(3a - 5b + ac))^3`
0.2:5 = 2:0.5
Which pair of ratios are equal? And why?
`2/3, 4/6`
Find two numbers whose sum is 100 and whose ratio is 9:16.
A typist has to type a manuscript of 40 pages. She has typed 30 pages of the manuscript. What is the ratio of the number of pages typed to the number of pages left?
