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Finding the Fourth Proportional to 94.62, 141.27 and 84.36

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Solution

The fourth proportional to 94.62, 141.27 and 84.36 is: 125.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.62 : 141.27 = 84.36 : x
  2. Step 2: Convert to fraction form
    94.62/141.27 = 84.36/x
  3. Step 3: Cross multiply
    94.62x = 141.27 × 84.36
  4. Step 4: Simplify right side
    94.62x = 11,917.54
  5. Step 5: Solve for x
    x = 11,917.54/94.62
  6. Step 6: Final answer
    x = 125.95

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.