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Finding the Third Proportional to 138.75 and 226

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Solution

The third proportional to 138.75 and 226 is: 368.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    138.75 : 226 = 226 : x
  2. Step 2: Convert to fraction form
    138.75/226 = 226/x
  3. Step 3: Cross multiply
    138.75x = 226 × 226
  4. Step 4: Simplify right side
    138.75x = 51,076
  5. Step 5: Solve for x
    x = 51,076/138.75
  6. Step 6: Final answer
    x = 368.12

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Why These Related Problems?

These problems maintain the same ratio (1.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.