Answer:
The ratios 7:8 and 42:48 are proportional.
Explanation:
Two ratios are called proportional if the ratios are representing the same relationship.
The ratio a:b is proportional to ka:kb.
The first ratio is 7:8, it means

The second ratio is 42:48.

cancel out the common factor.

Since both ratio represents the same relationship.

Therefore ratios 7:8 and 42:48 are proportional.