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Finding the Third Proportional to 279.25 and 584.75

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Solution

The third proportional to 279.25 and 584.75 is: 1,224.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    279.25 : 584.75 = 584.75 : x
  2. Step 2: Convert to fraction form
    279.25/584.75 = 584.75/x
  3. Step 3: Cross multiply
    279.25x = 584.75 × 584.75
  4. Step 4: Simplify right side
    279.25x = 341,932.56
  5. Step 5: Solve for x
    x = 341,932.56/279.25
  6. Step 6: Final answer
    x = 1,224.47

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.