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Finding the Third Proportional to 81.84 and 110.95

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Solution

The third proportional to 81.84 and 110.95 is: 150.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81.84 : 110.95 = 110.95 : x
  2. Step 2: Convert to fraction form
    81.84/110.95 = 110.95/x
  3. Step 3: Cross multiply
    81.84x = 110.95 × 110.95
  4. Step 4: Simplify right side
    81.84x = 12,310.60
  5. Step 5: Solve for x
    x = 12,310.60/81.84
  6. Step 6: Final answer
    x = 150.42

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.