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Finding the Fourth Proportional to 424.36, 637.15 and 242.11

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Solution

The fourth proportional to 424.36, 637.15 and 242.11 is: 363.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.36 : 637.15 = 242.11 : x
  2. Step 2: Convert to fraction form
    424.36/637.15 = 242.11/x
  3. Step 3: Cross multiply
    424.36x = 637.15 × 242.11
  4. Step 4: Simplify right side
    424.36x = 154,260.39
  5. Step 5: Solve for x
    x = 154,260.39/424.36
  6. Step 6: Final answer
    x = 363.51

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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.