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Finding the Fourth Proportional to 424.87, 637.53 and 242.39

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Solution

The fourth proportional to 424.87, 637.53 and 242.39 is: 363.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.87 : 637.53 = 242.39 : x
  2. Step 2: Convert to fraction form
    424.87/637.53 = 242.39/x
  3. Step 3: Cross multiply
    424.87x = 637.53 × 242.39
  4. Step 4: Simplify right side
    424.87x = 154,533.29
  5. Step 5: Solve for x
    x = 154,533.29/424.87
  6. Step 6: Final answer
    x = 363.72

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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.