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Finding the Third Proportional to 269.58 and 579.02

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Solution

The third proportional to 269.58 and 579.02 is: 1,243.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.58 : 579.02 = 579.02 : x
  2. Step 2: Convert to fraction form
    269.58/579.02 = 579.02/x
  3. Step 3: Cross multiply
    269.58x = 579.02 × 579.02
  4. Step 4: Simplify right side
    269.58x = 335,268.14
  5. Step 5: Solve for x
    x = 335,268.14/269.58
  6. Step 6: Final answer
    x = 1,243.68

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.