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Finding the Fourth Proportional to 73.77, 101.92 and 71.17

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Solution

The fourth proportional to 73.77, 101.92 and 71.17 is: 98.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.77 : 101.92 = 71.17 : x
  2. Step 2: Convert to fraction form
    73.77/101.92 = 71.17/x
  3. Step 3: Cross multiply
    73.77x = 101.92 × 71.17
  4. Step 4: Simplify right side
    73.77x = 7,253.65
  5. Step 5: Solve for x
    x = 7,253.65/73.77
  6. Step 6: Final answer
    x = 98.33

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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.