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Finding the Fourth Proportional to 379.92, 572.60 and 358.73

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Solution

The fourth proportional to 379.92, 572.60 and 358.73 is: 540.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.92 : 572.60 = 358.73 : x
  2. Step 2: Convert to fraction form
    379.92/572.60 = 358.73/x
  3. Step 3: Cross multiply
    379.92x = 572.60 × 358.73
  4. Step 4: Simplify right side
    379.92x = 205,404.14
  5. Step 5: Solve for x
    x = 205,404.14/379.92
  6. Step 6: Final answer
    x = 540.65

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.