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Finding the Fourth Proportional to 94.43, 130.01 and 80.61

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Solution

The fourth proportional to 94.43, 130.01 and 80.61 is: 110.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.43 : 130.01 = 80.61 : x
  2. Step 2: Convert to fraction form
    94.43/130.01 = 80.61/x
  3. Step 3: Cross multiply
    94.43x = 130.01 × 80.61
  4. Step 4: Simplify right side
    94.43x = 10,479.70
  5. Step 5: Solve for x
    x = 10,479.70/94.43
  6. Step 6: Final answer
    x = 110.98

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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.