Advertisements
Advertisements
Question
If 57 : x : : 51 : 85, then the value of x is
Options
95
76
114
none of these
Solution
95
57 : x :: 51 : 85
`57/x=51/5`
⇒ x = `(57 × 85)/51`
⇒ x = `4845/51` = 95
APPEARS IN
RELATED QUESTIONS
If a, b, c are in continued proportion and a(b - c) = 2b, prove that `a - c = (2(a + b))/a`
If a, b and c are in continued proportion, prove that `(a^2 + b^2 + c^2)/(a + b + c)^2 = (a - b + c)/(a + b + c)`
Find the mean proportional to (x – y) and (x3 – x2y).
Find the mean proportional between :
17.5 and 0.007
Find the two numbers such that their mean proprtional is 24 and the third proportinal is 1,536.
Find the third proportional to `5(1)/(4) and 7.`
In a fort, 550 men had provisions for 28 days. How many days will it last for 700 men?
Bachhu Manjhi earns Rs. 24000 in 8 months. At this rate, in how many months does he earn Rs. 42000?
Determine if the following are in proportion.
15, 45, 40, 120
Determine if the following are in proportion.
24, 28, 36, 48
