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Finding the Fourth Proportional to 83.52, 126 and 79.02

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Solution

The fourth proportional to 83.52, 126 and 79.02 is: 119.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    83.52 : 126 = 79.02 : x
  2. Step 2: Convert to fraction form
    83.52/126 = 79.02/x
  3. Step 3: Cross multiply
    83.52x = 126 × 79.02
  4. Step 4: Simplify right side
    83.52x = 9,956.52
  5. Step 5: Solve for x
    x = 9,956.52/83.52
  6. Step 6: Final answer
    x = 119.21

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.