Question

Find the third proportional as 4,5 and 6. please tell​

Answer 1

Step-by-step explanation:

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 answer

Answer 2

Answer:

Step-by-step explanation:

If a : b = c : d are in proportion then a/b = c/d

i.e. ad = bc

Product of extremes = Product of means

This is called cross product rule

Let the third proportion be 'x'

⇒ 4  : 5 : x : 6

⇒ 5x = 24

⇒ x = 24/5