Question

Find the propotional to:
4.5 and 6

Answer 1

Answer:

Answer

The third proportion of two numbers a and b is defined to be that number c such that a:b::b:c

Let the third proportion be x

Therefore third proportion of 4.5,6 will be given as

4.5:6::6:x

⇒

6

4.5

=

x

6

Cross multiply

⇒4.5×x=6×6

⇒4.5×x=36

⇒x=

4.5

36

On calculating

⇒x=8