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Finding the Third Proportional to 869.06 and 1,189.69

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Solution

The third proportional to 869.06 and 1,189.69 is: 1,628.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    869.06 : 1,189.69 = 1,189.69 : x
  2. Step 2: Convert to fraction form
    869.06/1,189.69 = 1,189.69/x
  3. Step 3: Cross multiply
    869.06x = 1,189.69 × 1,189.69
  4. Step 4: Simplify right side
    869.06x = 1,415,356.35
  5. Step 5: Solve for x
    x = 1,415,356.35/869.06
  6. Step 6: Final answer
    x = 1,628.60

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.