Final answer:
No, 10.50 and 5 do not represent a proportional relationship.
Step-by-step explanation:
A proportional relationship exists when two ratios are equivalent or equal. In this case, we have the ratios 10.50/5 and 5/1. To determine if these ratios are proportional, we can simplify them:
10.50/5 = 2.1 and 5/1 = 5
Since the simplified ratios are not equal, 10.50 and 5 do not represent a proportional relationship.