Question

Find the value of x, if

(а) 8, x, x, 50 are in proportion.

(b) 36, 90, 90, x are in proportion​

Answer 1

Answer:

product of means = product of extremes

8×50=x*x

400= x^2

x= 20

b. 36×x=90×90

x= 90×90/36=225