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Finding the Third Proportional to 718.69 and 1,545.38

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Solution

The third proportional to 718.69 and 1,545.38 is: 3,322.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    718.69 : 1,545.38 = 1,545.38 : x
  2. Step 2: Convert to fraction form
    718.69/1,545.38 = 1,545.38/x
  3. Step 3: Cross multiply
    718.69x = 1,545.38 × 1,545.38
  4. Step 4: Simplify right side
    718.69x = 2,388,183.89
  5. Step 5: Solve for x
    x = 2,388,183.89/718.69
  6. Step 6: Final answer
    x = 3,322.98

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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.