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Finding the Third Proportional to 401 and 619.25

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Solution

The third proportional to 401 and 619.25 is: 956.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    401 : 619.25 = 619.25 : x
  2. Step 2: Convert to fraction form
    401/619.25 = 619.25/x
  3. Step 3: Cross multiply
    401x = 619.25 × 619.25
  4. Step 4: Simplify right side
    401x = 383,470.56
  5. Step 5: Solve for x
    x = 383,470.56/401
  6. Step 6: Final answer
    x = 956.29

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.