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Finding the Third Proportional to 39.23 and 83.39

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Solution

The third proportional to 39.23 and 83.39 is: 177.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    39.23 : 83.39 = 83.39 : x
  2. Step 2: Convert to fraction form
    39.23/83.39 = 83.39/x
  3. Step 3: Cross multiply
    39.23x = 83.39 × 83.39
  4. Step 4: Simplify right side
    39.23x = 6,954.00
  5. Step 5: Solve for x
    x = 6,954.00/39.23
  6. Step 6: Final answer
    x = 177.24

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.