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Finding the Third Proportional to 126 and 205.50

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Solution

The third proportional to 126 and 205.50 is: 335.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    126 : 205.50 = 205.50 : x
  2. Step 2: Convert to fraction form
    126/205.50 = 205.50/x
  3. Step 3: Cross multiply
    126x = 205.50 × 205.50
  4. Step 4: Simplify right side
    126x = 42,230.25
  5. Step 5: Solve for x
    x = 42,230.25/126
  6. Step 6: Final answer
    x = 335.16

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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.