Question

Find the four Proportion of 9,12,8

Answer 1

Answer:

Correct option is

A

27

Let the fourth proportional to 4, 9, 12 be x

Then, 4:9::12:x

⇒4×x=9×12

⇒x=

4

9×12

=27

∴ Fourth proportional to 4, 9, 12 is 27.