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Finding the Third Proportional to 16.31 and 39.23

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Solution

The third proportional to 16.31 and 39.23 is: 94.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.31 : 39.23 = 39.23 : x
  2. Step 2: Convert to fraction form
    16.31/39.23 = 39.23/x
  3. Step 3: Cross multiply
    16.31x = 39.23 × 39.23
  4. Step 4: Simplify right side
    16.31x = 1,539.34
  5. Step 5: Solve for x
    x = 1,539.34/16.31
  6. Step 6: Final answer
    x = 94.37

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Why These Related Problems?

These problems maintain the same ratio (2.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.