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Finding the Third Proportional to 402.47 and 888.47

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Solution

The third proportional to 402.47 and 888.47 is: 1,961.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.47 : 888.47 = 888.47 : x
  2. Step 2: Convert to fraction form
    402.47/888.47 = 888.47/x
  3. Step 3: Cross multiply
    402.47x = 888.47 × 888.47
  4. Step 4: Simplify right side
    402.47x = 789,376.72
  5. Step 5: Solve for x
    x = 789,376.72/402.47
  6. Step 6: Final answer
    x = 1,961.34

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.