Question

If 4, 9, 20 are in proportion then what is 3 term

Answer 1

Step-by-step explanation:

let the third term be 'x'

4 : 9 = 20 : x

product of means = product of extremes

9 × 20 = x × 4

9 × 20 = 4x

4x = 20 × 9

x = 180/4

x = 45

hope it helps......