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Finding the Fourth Proportional to 94.27, 129.39 and 83.67

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Solution

The fourth proportional to 94.27, 129.39 and 83.67 is: 114.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.27 : 129.39 = 83.67 : x
  2. Step 2: Convert to fraction form
    94.27/129.39 = 83.67/x
  3. Step 3: Cross multiply
    94.27x = 129.39 × 83.67
  4. Step 4: Simplify right side
    94.27x = 10,825.64
  5. Step 5: Solve for x
    x = 10,825.64/94.27
  6. Step 6: Final answer
    x = 114.84

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.