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Finding the Fourth Proportional to 82.83, 124.26 and 67.67

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Solution

The fourth proportional to 82.83, 124.26 and 67.67 is: 101.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    82.83 : 124.26 = 67.67 : x
  2. Step 2: Convert to fraction form
    82.83/124.26 = 67.67/x
  3. Step 3: Cross multiply
    82.83x = 124.26 × 67.67
  4. Step 4: Simplify right side
    82.83x = 8,408.73
  5. Step 5: Solve for x
    x = 8,408.73/82.83
  6. Step 6: Final answer
    x = 101.52

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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.