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Finding the Fourth Proportional to 249.47, 373.90 and 112.38

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Solution

The fourth proportional to 249.47, 373.90 and 112.38 is: 168.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.47 : 373.90 = 112.38 : x
  2. Step 2: Convert to fraction form
    249.47/373.90 = 112.38/x
  3. Step 3: Cross multiply
    249.47x = 373.90 × 112.38
  4. Step 4: Simplify right side
    249.47x = 42,018.88
  5. Step 5: Solve for x
    x = 42,018.88/249.47
  6. Step 6: Final answer
    x = 168.43

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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.