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Finding the Third Proportional to 545.81 and 1,276.69

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Solution

The third proportional to 545.81 and 1,276.69 is: 2,986.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.81 : 1,276.69 = 1,276.69 : x
  2. Step 2: Convert to fraction form
    545.81/1,276.69 = 1,276.69/x
  3. Step 3: Cross multiply
    545.81x = 1,276.69 × 1,276.69
  4. Step 4: Simplify right side
    545.81x = 1,629,930.97
  5. Step 5: Solve for x
    x = 1,629,930.97/545.81
  6. Step 6: Final answer
    x = 2,986.25

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Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.