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Finding the Third Proportional to 408.94 and 799.88

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Solution

The third proportional to 408.94 and 799.88 is: 1,564.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    408.94 : 799.88 = 799.88 : x
  2. Step 2: Convert to fraction form
    408.94/799.88 = 799.88/x
  3. Step 3: Cross multiply
    408.94x = 799.88 × 799.88
  4. Step 4: Simplify right side
    408.94x = 639,800.02
  5. Step 5: Solve for x
    x = 639,800.02/408.94
  6. Step 6: Final answer
    x = 1,564.54

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Why These Related Problems?

These problems maintain the same ratio (1.96) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.