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Finding the Fourth Proportional to 94.68, 129.89 and 93.69

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Solution

The fourth proportional to 94.68, 129.89 and 93.69 is: 128.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.68 : 129.89 = 93.69 : x
  2. Step 2: Convert to fraction form
    94.68/129.89 = 93.69/x
  3. Step 3: Cross multiply
    94.68x = 129.89 × 93.69
  4. Step 4: Simplify right side
    94.68x = 12,168.93
  5. Step 5: Solve for x
    x = 12,168.93/94.68
  6. Step 6: Final answer
    x = 128.53

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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.