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Finding the Third Proportional to 406.88 and 882.38

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Solution

The third proportional to 406.88 and 882.38 is: 1,913.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    406.88 : 882.38 = 882.38 : x
  2. Step 2: Convert to fraction form
    406.88/882.38 = 882.38/x
  3. Step 3: Cross multiply
    406.88x = 882.38 × 882.38
  4. Step 4: Simplify right side
    406.88x = 778,585.64
  5. Step 5: Solve for x
    x = 778,585.64/406.88
  6. Step 6: Final answer
    x = 1,913.57

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.