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Finding the Third Proportional to 521 and 598

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Solution

The third proportional to 521 and 598 is: 686.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    521 : 598 = 598 : x
  2. Step 2: Convert to fraction form
    521/598 = 598/x
  3. Step 3: Cross multiply
    521x = 598 × 598
  4. Step 4: Simplify right side
    521x = 357,604
  5. Step 5: Solve for x
    x = 357,604/521
  6. Step 6: Final answer
    x = 686.38

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.