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Finding the Fourth Proportional to 82.91, 124.21 and 44.33

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Solution

The fourth proportional to 82.91, 124.21 and 44.33 is: 66.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    82.91 : 124.21 = 44.33 : x
  2. Step 2: Convert to fraction form
    82.91/124.21 = 44.33/x
  3. Step 3: Cross multiply
    82.91x = 124.21 × 44.33
  4. Step 4: Simplify right side
    82.91x = 5,506.11
  5. Step 5: Solve for x
    x = 5,506.11/82.91
  6. Step 6: Final answer
    x = 66.41

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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.