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Finding the Third Proportional to 398.25 and 882.56

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Solution

The third proportional to 398.25 and 882.56 is: 1,955.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.25 : 882.56 = 882.56 : x
  2. Step 2: Convert to fraction form
    398.25/882.56 = 882.56/x
  3. Step 3: Cross multiply
    398.25x = 882.56 × 882.56
  4. Step 4: Simplify right side
    398.25x = 778,916.57
  5. Step 5: Solve for x
    x = 778,916.57/398.25
  6. Step 6: Final answer
    x = 1,955.85

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.