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Finding the Fourth Proportional to 68.87, 95.47 and 67.73

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Solution

The fourth proportional to 68.87, 95.47 and 67.73 is: 93.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.87 : 95.47 = 67.73 : x
  2. Step 2: Convert to fraction form
    68.87/95.47 = 67.73/x
  3. Step 3: Cross multiply
    68.87x = 95.47 × 67.73
  4. Step 4: Simplify right side
    68.87x = 6,465.54
  5. Step 5: Solve for x
    x = 6,465.54/68.87
  6. Step 6: Final answer
    x = 93.88

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.