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Finding the Fourth Proportional to 63.17, 94.78 and 22.60

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Solution

The fourth proportional to 63.17, 94.78 and 22.60 is: 33.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.17 : 94.78 = 22.60 : x
  2. Step 2: Convert to fraction form
    63.17/94.78 = 22.60/x
  3. Step 3: Cross multiply
    63.17x = 94.78 × 22.60
  4. Step 4: Simplify right side
    63.17x = 2,141.92
  5. Step 5: Solve for x
    x = 2,141.92/63.17
  6. Step 6: Final answer
    x = 33.91

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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.