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Finding the Fourth Proportional to 249.46, 374.30 and 133.90

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Solution

The fourth proportional to 249.46, 374.30 and 133.90 is: 200.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.46 : 374.30 = 133.90 : x
  2. Step 2: Convert to fraction form
    249.46/374.30 = 133.90/x
  3. Step 3: Cross multiply
    249.46x = 374.30 × 133.90
  4. Step 4: Simplify right side
    249.46x = 50,118.77
  5. Step 5: Solve for x
    x = 50,118.77/249.46
  6. Step 6: Final answer
    x = 200.91

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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.