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Finding the Fourth Proportional to 83.07, 113.86 and 82.62

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Solution

The fourth proportional to 83.07, 113.86 and 82.62 is: 113.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    83.07 : 113.86 = 82.62 : x
  2. Step 2: Convert to fraction form
    83.07/113.86 = 82.62/x
  3. Step 3: Cross multiply
    83.07x = 113.86 × 82.62
  4. Step 4: Simplify right side
    83.07x = 9,407.22
  5. Step 5: Solve for x
    x = 9,407.22/83.07
  6. Step 6: Final answer
    x = 113.24

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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.