Algebra-1

To determine which ratio forms a proportion with 4:5, we need to check which of the given ratios is equal to 4:5. We can simplify each option and compare them directly.

Option A, 16:25

Simplify 16:25. Since there are no common factors other than 1, it remains 16:25. This is not equal to 4:5, so it is not proportional to 4:5.

Option B, 5:4

This is the reverse of 4:5 and cannot be simplified to match 4:5, so it is not proportional to 4:5.

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