Advertisements
Advertisements
प्रश्न
Find the value of the unknown in the following proportion :
5 : 12 :: 15 : x
उत्तर
5 : 12 :: 15 : x
⇒ 5 × X = 12 x 15
⇒ x = `(12 xx 15)/5`
⇒ x = 36
APPEARS IN
संबंधित प्रश्न
Find the third proportion to the following :
3 and 15
Find the third proportion to the following :
(x - y) and m (x - y)
If a, b, c and dare in continued proportion, then prove that
(a+ d)(b+ c)-(a+ c)(b+ d)= (b-c)2
If a : b = c : d, show that (a - c) b2 : (b - d) cd = (a2 - b2 - ab) : (c2 - d2 - cd).
Determine if the following numbers are in proportion:
7, 42, 13, 78
If the cost of a dozen soaps is Rs 285.60, what will be the cost of 15 such soaps?
The weight of 65 books is 13 kg.
(i) What is the weight of 80 such books?
(ii) How many such books weigh 6.4 kg?
If `x/a = y/b = z/c`, prove that `x^3/a^2 + y^3/b^2 + z^3/c^2 = (x+ y+ z)^3/(a + b+ c)^2`
If a, b, c, d are in continued proportion, prove that: a : d = triplicate ratio of (a – b) : (b – c)
Do the ratios 15 cm to 2 m and 10 sec to 3 minutes form a proportion?
