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Finding the Fourth Proportional to 462.34, 638.04 and 338.68

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Solution

The fourth proportional to 462.34, 638.04 and 338.68 is: 467.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.34 : 638.04 = 338.68 : x
  2. Step 2: Convert to fraction form
    462.34/638.04 = 338.68/x
  3. Step 3: Cross multiply
    462.34x = 638.04 × 338.68
  4. Step 4: Simplify right side
    462.34x = 216,091.39
  5. Step 5: Solve for x
    x = 216,091.39/462.34
  6. Step 6: Final answer
    x = 467.39

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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.