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Finding the Third Proportional to 138.50 and 195

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Solution

The third proportional to 138.50 and 195 is: 274.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    138.50 : 195 = 195 : x
  2. Step 2: Convert to fraction form
    138.50/195 = 195/x
  3. Step 3: Cross multiply
    138.50x = 195 × 195
  4. Step 4: Simplify right side
    138.50x = 38,025
  5. Step 5: Solve for x
    x = 38,025/138.50
  6. Step 6: Final answer
    x = 274.55

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.