Finding the Third Proportional to 398 and 450
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Solution
The third proportional to 398 and 450 is: 508.79
Step by Step Solution
- Step 1: Write the proportion equation
398 : 450 = 450 : x - Step 2: Convert to fraction form
398/450 = 450/x - Step 3: Cross multiply
398x = 450 × 450 - Step 4: Simplify right side
398x = 202,500 - Step 5: Solve for x
x = 202,500/398 - Step 6: Final answer
x = 508.79
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These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.