Question

What are the means of the following proportion 17/51=28/84?

Answer 1

Answer:

these ratios are called in proportion.

Step-by-step explanation:

A proportion is  a statement that two ratios are equal. It can be written in two ways: as two equal fractions a/b = c/d; or using a colon, a:b = c:d.

Two ratios  with  Four numbers a, b, c, d are in proportion if a : b = c : d (we can write it as a : b :: c : d).

On simplifying both

$\frac{17}{51} \\\frac{28}{84}$  gives $\frac{1}{3}$

therefore these numbers are called in proportion.

Answer 2

The two middle numbers are the means and outer ones are extremes.

So, in $\frac{17}{50}= \frac{28}{84}$ 50 and 28 are means and 17 and 84 are extremes.

Suppose we have two ratios a:b and c:d which are in proportion.

So it is written as : $\frac{a}{b}=\frac{c}{d}$ so 'a' and 'd' are extremes and 'b' and 'c' are means.