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Finding the Fourth Proportional to 80.97, 111.83 and 60.22

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Solution

The fourth proportional to 80.97, 111.83 and 60.22 is: 83.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    80.97 : 111.83 = 60.22 : x
  2. Step 2: Convert to fraction form
    80.97/111.83 = 60.22/x
  3. Step 3: Cross multiply
    80.97x = 111.83 × 60.22
  4. Step 4: Simplify right side
    80.97x = 6,734.40
  5. Step 5: Solve for x
    x = 6,734.40/80.97
  6. Step 6: Final answer
    x = 83.17

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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.