Finding the Third Proportional to 440 and 521
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Solution
The third proportional to 440 and 521 is: 616.91
Step by Step Solution
- Step 1: Write the proportion equation
440 : 521 = 521 : x - Step 2: Convert to fraction form
440/521 = 521/x - Step 3: Cross multiply
440x = 521 × 521 - Step 4: Simplify right side
440x = 271,441 - Step 5: Solve for x
x = 271,441/440 - Step 6: Final answer
x = 616.91
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These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.