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Finding the Third Proportional to 553.36 and 888.61

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Solution

The third proportional to 553.36 and 888.61 is: 1,426.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.36 : 888.61 = 888.61 : x
  2. Step 2: Convert to fraction form
    553.36/888.61 = 888.61/x
  3. Step 3: Cross multiply
    553.36x = 888.61 × 888.61
  4. Step 4: Simplify right side
    553.36x = 789,626.62
  5. Step 5: Solve for x
    x = 789,626.62/553.36
  6. Step 6: Final answer
    x = 1,426.97

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.