Solution:
First, let's simplify both the fractions.
Simplifying both fractions.
- 28.5/42 = 57/84 = 19/28
- 19/28 is already in simplest form.
Checking to see if both ratios are proportional.
- => 28.5:42::19:28
- => 19:28::19:28 [Proportional]
We can conclude that both ratios are the same.
Hence, they are proportional.