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Finding the Fourth Proportional to 63.28, 94.16 and 62.72

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Solution

The fourth proportional to 63.28, 94.16 and 62.72 is: 93.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.28 : 94.16 = 62.72 : x
  2. Step 2: Convert to fraction form
    63.28/94.16 = 62.72/x
  3. Step 3: Cross multiply
    63.28x = 94.16 × 62.72
  4. Step 4: Simplify right side
    63.28x = 5,906.28
  5. Step 5: Solve for x
    x = 5,906.28/63.28
  6. Step 6: Final answer
    x = 93.33

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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.