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Finding the Fourth Proportional to 438.38, 658.03 and 322.96

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Solution

The fourth proportional to 438.38, 658.03 and 322.96 is: 484.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.38 : 658.03 = 322.96 : x
  2. Step 2: Convert to fraction form
    438.38/658.03 = 322.96/x
  3. Step 3: Cross multiply
    438.38x = 658.03 × 322.96
  4. Step 4: Simplify right side
    438.38x = 212,516.13
  5. Step 5: Solve for x
    x = 212,516.13/438.38
  6. Step 6: Final answer
    x = 484.77

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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.