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Finding the Fourth Proportional to 424.60, 637.02 and 251.42

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Solution

The fourth proportional to 424.60, 637.02 and 251.42 is: 377.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.60 : 637.02 = 251.42 : x
  2. Step 2: Convert to fraction form
    424.60/637.02 = 251.42/x
  3. Step 3: Cross multiply
    424.60x = 637.02 × 251.42
  4. Step 4: Simplify right side
    424.60x = 160,159.57
  5. Step 5: Solve for x
    x = 160,159.57/424.60
  6. Step 6: Final answer
    x = 377.20

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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.