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Finding the Third Proportional to 669.56 and 1,065.19

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Solution

The third proportional to 669.56 and 1,065.19 is: 1,694.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.56 : 1,065.19 = 1,065.19 : x
  2. Step 2: Convert to fraction form
    669.56/1,065.19 = 1,065.19/x
  3. Step 3: Cross multiply
    669.56x = 1,065.19 × 1,065.19
  4. Step 4: Simplify right side
    669.56x = 1,134,624.41
  5. Step 5: Solve for x
    x = 1,134,624.41/669.56
  6. Step 6: Final answer
    x = 1,694.58

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.