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Finding the Fourth Proportional to 63.38, 94.85 and 45.06

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Solution

The fourth proportional to 63.38, 94.85 and 45.06 is: 67.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.38 : 94.85 = 45.06 : x
  2. Step 2: Convert to fraction form
    63.38/94.85 = 45.06/x
  3. Step 3: Cross multiply
    63.38x = 94.85 × 45.06
  4. Step 4: Simplify right side
    63.38x = 4,273.72
  5. Step 5: Solve for x
    x = 4,273.72/63.38
  6. Step 6: Final answer
    x = 67.43

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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.