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Finding the Fourth Proportional to 462.59, 638.21 and 296.89

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Solution

The fourth proportional to 462.59, 638.21 and 296.89 is: 409.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.59 : 638.21 = 296.89 : x
  2. Step 2: Convert to fraction form
    462.59/638.21 = 296.89/x
  3. Step 3: Cross multiply
    462.59x = 638.21 × 296.89
  4. Step 4: Simplify right side
    462.59x = 189,478.17
  5. Step 5: Solve for x
    x = 189,478.17/462.59
  6. Step 6: Final answer
    x = 409.60

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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.