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Finding the Fourth Proportional to 542.97, 749.39 and 519.62

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Solution

The fourth proportional to 542.97, 749.39 and 519.62 is: 717.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.97 : 749.39 = 519.62 : x
  2. Step 2: Convert to fraction form
    542.97/749.39 = 519.62/x
  3. Step 3: Cross multiply
    542.97x = 749.39 × 519.62
  4. Step 4: Simplify right side
    542.97x = 389,391.69
  5. Step 5: Solve for x
    x = 389,391.69/542.97
  6. Step 6: Final answer
    x = 717.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.