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Finding the Fourth Proportional to 87.82, 132.27 and 67.67

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Solution

The fourth proportional to 87.82, 132.27 and 67.67 is: 101.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87.82 : 132.27 = 67.67 : x
  2. Step 2: Convert to fraction form
    87.82/132.27 = 67.67/x
  3. Step 3: Cross multiply
    87.82x = 132.27 × 67.67
  4. Step 4: Simplify right side
    87.82x = 8,950.05
  5. Step 5: Solve for x
    x = 8,950.05/87.82
  6. Step 6: Final answer
    x = 101.92

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.