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Finding the Fourth Proportional to 374.92, 517.56 and 291.83

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Solution

The fourth proportional to 374.92, 517.56 and 291.83 is: 402.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.92 : 517.56 = 291.83 : x
  2. Step 2: Convert to fraction form
    374.92/517.56 = 291.83/x
  3. Step 3: Cross multiply
    374.92x = 517.56 × 291.83
  4. Step 4: Simplify right side
    374.92x = 151,035.49
  5. Step 5: Solve for x
    x = 151,035.49/374.92
  6. Step 6: Final answer
    x = 402.85

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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.