Question

(7) Find the value of x in each of the following proportions :

(a) 5 ∶ 8 ∶∶ 25 ∶ x (b) 57 ∶ x∶∶ 51 ∶ 83​

Answer 1

Answer:

(a) 5 : 8 : : 25 : x

» x = (25 × 8)/5

» x = 5 × 8 = 40

(b) 57 : x : : 51 : 83

» x =(83 × 57)/51

» x = 92.77