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Finding the Fourth Proportional to 249.10, 374.31 and 133.63

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Solution

The fourth proportional to 249.10, 374.31 and 133.63 is: 200.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.10 : 374.31 = 133.63 : x
  2. Step 2: Convert to fraction form
    249.10/374.31 = 133.63/x
  3. Step 3: Cross multiply
    249.10x = 374.31 × 133.63
  4. Step 4: Simplify right side
    249.10x = 50,019.05
  5. Step 5: Solve for x
    x = 50,019.05/249.10
  6. Step 6: Final answer
    x = 200.80

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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.