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Finding the Third Proportional to 138.94 and 185.34

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Solution

The third proportional to 138.94 and 185.34 is: 247.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    138.94 : 185.34 = 185.34 : x
  2. Step 2: Convert to fraction form
    138.94/185.34 = 185.34/x
  3. Step 3: Cross multiply
    138.94x = 185.34 × 185.34
  4. Step 4: Simplify right side
    138.94x = 34,352.31
  5. Step 5: Solve for x
    x = 34,352.31/138.94
  6. Step 6: Final answer
    x = 247.25

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.