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Finding the Fourth Proportional to 94.52, 141.76 and 43.15

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Solution

The fourth proportional to 94.52, 141.76 and 43.15 is: 64.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.52 : 141.76 = 43.15 : x
  2. Step 2: Convert to fraction form
    94.52/141.76 = 43.15/x
  3. Step 3: Cross multiply
    94.52x = 141.76 × 43.15
  4. Step 4: Simplify right side
    94.52x = 6,116.94
  5. Step 5: Solve for x
    x = 6,116.94/94.52
  6. Step 6: Final answer
    x = 64.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.