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Finding the Fourth Proportional to 73.97, 111.03 and 43.13

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Solution

The fourth proportional to 73.97, 111.03 and 43.13 is: 64.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.97 : 111.03 = 43.13 : x
  2. Step 2: Convert to fraction form
    73.97/111.03 = 43.13/x
  3. Step 3: Cross multiply
    73.97x = 111.03 × 43.13
  4. Step 4: Simplify right side
    73.97x = 4,788.17
  5. Step 5: Solve for x
    x = 4,788.17/73.97
  6. Step 6: Final answer
    x = 64.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.