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Finding the Third Proportional to 669.20 and 1,453.25

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Solution

The third proportional to 669.20 and 1,453.25 is: 3,155.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.20 : 1,453.25 = 1,453.25 : x
  2. Step 2: Convert to fraction form
    669.20/1,453.25 = 1,453.25/x
  3. Step 3: Cross multiply
    669.20x = 1,453.25 × 1,453.25
  4. Step 4: Simplify right side
    669.20x = 2,111,946.92
  5. Step 5: Solve for x
    x = 2,111,946.92/669.20
  6. Step 6: Final answer
    x = 3,155.93

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.