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Finding the Fourth Proportional to 133.82, 184.68 and 75.61

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Solution

The fourth proportional to 133.82, 184.68 and 75.61 is: 104.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.82 : 184.68 = 75.61 : x
  2. Step 2: Convert to fraction form
    133.82/184.68 = 75.61/x
  3. Step 3: Cross multiply
    133.82x = 184.68 × 75.61
  4. Step 4: Simplify right side
    133.82x = 13,962.35
  5. Step 5: Solve for x
    x = 13,962.35/133.82
  6. Step 6: Final answer
    x = 104.34

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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.