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Finding the Fourth Proportional to 94.11, 129.90 and 63.08

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Solution

The fourth proportional to 94.11, 129.90 and 63.08 is: 87.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.11 : 129.90 = 63.08 : x
  2. Step 2: Convert to fraction form
    94.11/129.90 = 63.08/x
  3. Step 3: Cross multiply
    94.11x = 129.90 × 63.08
  4. Step 4: Simplify right side
    94.11x = 8,193.94
  5. Step 5: Solve for x
    x = 8,193.94/94.11
  6. Step 6: Final answer
    x = 87.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.