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Finding the Fourth Proportional to 99.56, 149.13 and 63.38

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Solution

The fourth proportional to 99.56, 149.13 and 63.38 is: 94.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    99.56 : 149.13 = 63.38 : x
  2. Step 2: Convert to fraction form
    99.56/149.13 = 63.38/x
  3. Step 3: Cross multiply
    99.56x = 149.13 × 63.38
  4. Step 4: Simplify right side
    99.56x = 9,451.11
  5. Step 5: Solve for x
    x = 9,451.11/99.56
  6. Step 6: Final answer
    x = 94.93

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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.