The third proportional to 0.25 and 0.55 is:

The third proportional to 0.25 and 0.55 is:

A 0.65

B 0.95

C 1.25

D 1.05

E 1.21

Solution

Correct Answer: Option E

When c is the third proportional to a and b,

a : b = b : c

Let the third proportional be x

∴ 0.25/0.55 = 0.55/x

⇒ x = (0.55 × 0.55)/0.25

⇒ x = 1.21