Question

Show that 4:8:16:90 are in proportion or not.

Answer 1

$\underline \bold {Solution:-}$

The numbers the said to be in proportion of the product of there extreme is equal to the product of there mean.

Here, extreme are:- 4 and 90

So, the product of extreme = 4 × 90 = 360

And,

Mean are :- 8 and 16

So, the product of mean = 8 × 16 = 128

Since , Product of extreme ≠ Product of mean

So, they are not in proportion.

Answer 2

Answer:

4 :8 : 16 : 90

They are propoertionate if the product of extreme = product of mean

prodict of extrme =4*90

= 360

Product of mean = 8*16

.= 128

so they are not equal and they are nt propotinate.