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Finding the Fourth Proportional to 524.91, 781.36 and 517.12

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Solution

The fourth proportional to 524.91, 781.36 and 517.12 is: 769.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.91 : 781.36 = 517.12 : x
  2. Step 2: Convert to fraction form
    524.91/781.36 = 517.12/x
  3. Step 3: Cross multiply
    524.91x = 781.36 × 517.12
  4. Step 4: Simplify right side
    524.91x = 404,056.88
  5. Step 5: Solve for x
    x = 404,056.88/524.91
  6. Step 6: Final answer
    x = 769.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.