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Finding the Fourth Proportional to 203.73, 281.15 and 133.91

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Solution

The fourth proportional to 203.73, 281.15 and 133.91 is: 184.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.73 : 281.15 = 133.91 : x
  2. Step 2: Convert to fraction form
    203.73/281.15 = 133.91/x
  3. Step 3: Cross multiply
    203.73x = 281.15 × 133.91
  4. Step 4: Simplify right side
    203.73x = 37,646.72
  5. Step 5: Solve for x
    x = 37,646.72/203.73
  6. Step 6: Final answer
    x = 184.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.