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Finding the Fourth Proportional to 425.26, 638.03 and 232.75

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Solution

The fourth proportional to 425.26, 638.03 and 232.75 is: 349.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.26 : 638.03 = 232.75 : x
  2. Step 2: Convert to fraction form
    425.26/638.03 = 232.75/x
  3. Step 3: Cross multiply
    425.26x = 638.03 × 232.75
  4. Step 4: Simplify right side
    425.26x = 148,501.48
  5. Step 5: Solve for x
    x = 148,501.48/425.26
  6. Step 6: Final answer
    x = 349.20

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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.