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Finding the Third Proportional to 371.25 and 551.11

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Solution

The third proportional to 371.25 and 551.11 is: 818.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.25 : 551.11 = 551.11 : x
  2. Step 2: Convert to fraction form
    371.25/551.11 = 551.11/x
  3. Step 3: Cross multiply
    371.25x = 551.11 × 551.11
  4. Step 4: Simplify right side
    371.25x = 303,721.54
  5. Step 5: Solve for x
    x = 303,721.54/371.25
  6. Step 6: Final answer
    x = 818.11

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.