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Finding the Third Proportional to 138.50 and 295

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Solution

The third proportional to 138.50 and 295 is: 628.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    138.50 : 295 = 295 : x
  2. Step 2: Convert to fraction form
    138.50/295 = 295/x
  3. Step 3: Cross multiply
    138.50x = 295 × 295
  4. Step 4: Simplify right side
    138.50x = 87,025
  5. Step 5: Solve for x
    x = 87,025/138.50
  6. Step 6: Final answer
    x = 628.34

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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.