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Finding the Third Proportional to 441.25 and 619.88

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Solution

The third proportional to 441.25 and 619.88 is: 870.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.25 : 619.88 = 619.88 : x
  2. Step 2: Convert to fraction form
    441.25/619.88 = 619.88/x
  3. Step 3: Cross multiply
    441.25x = 619.88 × 619.88
  4. Step 4: Simplify right side
    441.25x = 384,245.02
  5. Step 5: Solve for x
    x = 384,245.02/441.25
  6. Step 6: Final answer
    x = 870.81

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.