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Finding the Fourth Proportional to 425.62, 637.90 and 230.73

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Solution

The fourth proportional to 425.62, 637.90 and 230.73 is: 345.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.62 : 637.90 = 230.73 : x
  2. Step 2: Convert to fraction form
    425.62/637.90 = 230.73/x
  3. Step 3: Cross multiply
    425.62x = 637.90 × 230.73
  4. Step 4: Simplify right side
    425.62x = 147,182.67
  5. Step 5: Solve for x
    x = 147,182.67/425.62
  6. Step 6: Final answer
    x = 345.81

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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.