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Finding the Fourth Proportional to 270.92, 374.07 and 239.87

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Solution

The fourth proportional to 270.92, 374.07 and 239.87 is: 331.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.92 : 374.07 = 239.87 : x
  2. Step 2: Convert to fraction form
    270.92/374.07 = 239.87/x
  3. Step 3: Cross multiply
    270.92x = 374.07 × 239.87
  4. Step 4: Simplify right side
    270.92x = 89,726.30
  5. Step 5: Solve for x
    x = 89,726.30/270.92
  6. Step 6: Final answer
    x = 331.20

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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.