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Finding the Fourth Proportional to 94.64, 129.87 and 93.62

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Solution

The fourth proportional to 94.64, 129.87 and 93.62 is: 128.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.64 : 129.87 = 93.62 : x
  2. Step 2: Convert to fraction form
    94.64/129.87 = 93.62/x
  3. Step 3: Cross multiply
    94.64x = 129.87 × 93.62
  4. Step 4: Simplify right side
    94.64x = 12,158.75
  5. Step 5: Solve for x
    x = 12,158.75/94.64
  6. Step 6: Final answer
    x = 128.48

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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.