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Finding the Third Proportional to 1,222.59 and 1,645.95

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Solution

The third proportional to 1,222.59 and 1,645.95 is: 2,215.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222.59 : 1,645.95 = 1,645.95 : x
  2. Step 2: Convert to fraction form
    1,222.59/1,645.95 = 1,645.95/x
  3. Step 3: Cross multiply
    1,222.59x = 1,645.95 × 1,645.95
  4. Step 4: Simplify right side
    1,222.59x = 2,709,135.97
  5. Step 5: Solve for x
    x = 2,709,135.97/1,222.59
  6. Step 6: Final answer
    x = 2,215.89

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.