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Finding the Third Proportional to 260.75 and 545.50

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Solution

The third proportional to 260.75 and 545.50 is: 1,141.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.75 : 545.50 = 545.50 : x
  2. Step 2: Convert to fraction form
    260.75/545.50 = 545.50/x
  3. Step 3: Cross multiply
    260.75x = 545.50 × 545.50
  4. Step 4: Simplify right side
    260.75x = 297,570.25
  5. Step 5: Solve for x
    x = 297,570.25/260.75
  6. Step 6: Final answer
    x = 1,141.21

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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.