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Finding the Fourth Proportional to 438.59, 658.14 and 233.16

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Solution

The fourth proportional to 438.59, 658.14 and 233.16 is: 349.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.59 : 658.14 = 233.16 : x
  2. Step 2: Convert to fraction form
    438.59/658.14 = 233.16/x
  3. Step 3: Cross multiply
    438.59x = 658.14 × 233.16
  4. Step 4: Simplify right side
    438.59x = 153,451.92
  5. Step 5: Solve for x
    x = 153,451.92/438.59
  6. Step 6: Final answer
    x = 349.88

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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.