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Finding the Fourth Proportional to 519.92, 717.10 and 353.88

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Solution

The fourth proportional to 519.92, 717.10 and 353.88 is: 488.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    519.92 : 717.10 = 353.88 : x
  2. Step 2: Convert to fraction form
    519.92/717.10 = 353.88/x
  3. Step 3: Cross multiply
    519.92x = 717.10 × 353.88
  4. Step 4: Simplify right side
    519.92x = 253,767.35
  5. Step 5: Solve for x
    x = 253,767.35/519.92
  6. Step 6: Final answer
    x = 488.09

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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.