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Finding the Fourth Proportional to 83.18, 125.50 and 82.96

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Solution

The fourth proportional to 83.18, 125.50 and 82.96 is: 125.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    83.18 : 125.50 = 82.96 : x
  2. Step 2: Convert to fraction form
    83.18/125.50 = 82.96/x
  3. Step 3: Cross multiply
    83.18x = 125.50 × 82.96
  4. Step 4: Simplify right side
    83.18x = 10,411.11
  5. Step 5: Solve for x
    x = 10,411.11/83.18
  6. Step 6: Final answer
    x = 125.16

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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.