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Finding the Fourth Proportional to 94.74, 131.29 and 92.92

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Solution

The fourth proportional to 94.74, 131.29 and 92.92 is: 128.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.74 : 131.29 = 92.92 : x
  2. Step 2: Convert to fraction form
    94.74/131.29 = 92.92/x
  3. Step 3: Cross multiply
    94.74x = 131.29 × 92.92
  4. Step 4: Simplify right side
    94.74x = 12,198.46
  5. Step 5: Solve for x
    x = 12,198.46/94.74
  6. Step 6: Final answer
    x = 128.76

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.