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Finding the Third Proportional to 202.75 and 408.75

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Solution

The third proportional to 202.75 and 408.75 is: 824.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.75 : 408.75 = 408.75 : x
  2. Step 2: Convert to fraction form
    202.75/408.75 = 408.75/x
  3. Step 3: Cross multiply
    202.75x = 408.75 × 408.75
  4. Step 4: Simplify right side
    202.75x = 167,076.56
  5. Step 5: Solve for x
    x = 167,076.56/202.75
  6. Step 6: Final answer
    x = 824.05

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Why These Related Problems?

These problems maintain the same ratio (2.02) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.