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Finding the Third Proportional to 814.22 and 1,638.56

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Solution

The third proportional to 814.22 and 1,638.56 is: 3,297.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    814.22 : 1,638.56 = 1,638.56 : x
  2. Step 2: Convert to fraction form
    814.22/1,638.56 = 1,638.56/x
  3. Step 3: Cross multiply
    814.22x = 1,638.56 × 1,638.56
  4. Step 4: Simplify right side
    814.22x = 2,684,887.07
  5. Step 5: Solve for x
    x = 2,684,887.07/814.22
  6. Step 6: Final answer
    x = 3,297.50

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Why These Related Problems?

These problems maintain the same ratio (2.01) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.