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Finding the Third Proportional to 579.84 and 1,281.19

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Solution

The third proportional to 579.84 and 1,281.19 is: 2,830.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.84 : 1,281.19 = 1,281.19 : x
  2. Step 2: Convert to fraction form
    579.84/1,281.19 = 1,281.19/x
  3. Step 3: Cross multiply
    579.84x = 1,281.19 × 1,281.19
  4. Step 4: Simplify right side
    579.84x = 1,641,441.41
  5. Step 5: Solve for x
    x = 1,641,441.41/579.84
  6. Step 6: Final answer
    x = 2,830.83

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.