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Finding the Fourth Proportional to 327.92, 490.68 and 269.96

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Solution

The fourth proportional to 327.92, 490.68 and 269.96 is: 403.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.92 : 490.68 = 269.96 : x
  2. Step 2: Convert to fraction form
    327.92/490.68 = 269.96/x
  3. Step 3: Cross multiply
    327.92x = 490.68 × 269.96
  4. Step 4: Simplify right side
    327.92x = 132,463.97
  5. Step 5: Solve for x
    x = 132,463.97/327.92
  6. Step 6: Final answer
    x = 403.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.