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Finding the Fourth Proportional to 88.98, 132.92 and 80.88

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Solution

The fourth proportional to 88.98, 132.92 and 80.88 is: 120.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.98 : 132.92 = 80.88 : x
  2. Step 2: Convert to fraction form
    88.98/132.92 = 80.88/x
  3. Step 3: Cross multiply
    88.98x = 132.92 × 80.88
  4. Step 4: Simplify right side
    88.98x = 10,750.17
  5. Step 5: Solve for x
    x = 10,750.17/88.98
  6. Step 6: Final answer
    x = 120.82

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.