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Finding the Third Proportional to 363.09 and 553.19

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Solution

The third proportional to 363.09 and 553.19 is: 842.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.09 : 553.19 = 553.19 : x
  2. Step 2: Convert to fraction form
    363.09/553.19 = 553.19/x
  3. Step 3: Cross multiply
    363.09x = 553.19 × 553.19
  4. Step 4: Simplify right side
    363.09x = 306,016.41
  5. Step 5: Solve for x
    x = 306,016.41/363.09
  6. Step 6: Final answer
    x = 842.80

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.