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Finding the Fourth Proportional to 96.93, 133.72 and 61.46

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Solution

The fourth proportional to 96.93, 133.72 and 61.46 is: 84.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.93 : 133.72 = 61.46 : x
  2. Step 2: Convert to fraction form
    96.93/133.72 = 61.46/x
  3. Step 3: Cross multiply
    96.93x = 133.72 × 61.46
  4. Step 4: Simplify right side
    96.93x = 8,218.11
  5. Step 5: Solve for x
    x = 8,218.11/96.93
  6. Step 6: Final answer
    x = 84.78

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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.