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Finding the Third Proportional to 202.41 and 381.19

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Solution

The third proportional to 202.41 and 381.19 is: 717.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.41 : 381.19 = 381.19 : x
  2. Step 2: Convert to fraction form
    202.41/381.19 = 381.19/x
  3. Step 3: Cross multiply
    202.41x = 381.19 × 381.19
  4. Step 4: Simplify right side
    202.41x = 145,303.91
  5. Step 5: Solve for x
    x = 145,303.91/202.41
  6. Step 6: Final answer
    x = 717.88

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Why These Related Problems?

These problems maintain the same ratio (1.88) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.