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Finding the Fourth Proportional to 331.89, 458.17 and 207.62

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Solution

The fourth proportional to 331.89, 458.17 and 207.62 is: 286.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.89 : 458.17 = 207.62 : x
  2. Step 2: Convert to fraction form
    331.89/458.17 = 207.62/x
  3. Step 3: Cross multiply
    331.89x = 458.17 × 207.62
  4. Step 4: Simplify right side
    331.89x = 95,122.45
  5. Step 5: Solve for x
    x = 95,122.45/331.89
  6. Step 6: Final answer
    x = 286.61

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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.