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Finding the Fourth Proportional to 73.87, 110.28 and 63.48

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Solution

The fourth proportional to 73.87, 110.28 and 63.48 is: 94.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.87 : 110.28 = 63.48 : x
  2. Step 2: Convert to fraction form
    73.87/110.28 = 63.48/x
  3. Step 3: Cross multiply
    73.87x = 110.28 × 63.48
  4. Step 4: Simplify right side
    73.87x = 6,999.98
  5. Step 5: Solve for x
    x = 6,999.98/73.87
  6. Step 6: Final answer
    x = 94.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.