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Finding the Fourth Proportional to 425.29, 638.97 and 363.79

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Solution

The fourth proportional to 425.29, 638.97 and 363.79 is: 546.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.29 : 638.97 = 363.79 : x
  2. Step 2: Convert to fraction form
    425.29/638.97 = 363.79/x
  3. Step 3: Cross multiply
    425.29x = 638.97 × 363.79
  4. Step 4: Simplify right side
    425.29x = 232,450.90
  5. Step 5: Solve for x
    x = 232,450.90/425.29
  6. Step 6: Final answer
    x = 546.57

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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.