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Finding the Fourth Proportional to 424.31, 637.02 and 242.06

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Solution

The fourth proportional to 424.31, 637.02 and 242.06 is: 363.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.31 : 637.02 = 242.06 : x
  2. Step 2: Convert to fraction form
    424.31/637.02 = 242.06/x
  3. Step 3: Cross multiply
    424.31x = 637.02 × 242.06
  4. Step 4: Simplify right side
    424.31x = 154,193.88
  5. Step 5: Solve for x
    x = 154,193.88/424.31
  6. Step 6: Final answer
    x = 363.40

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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.