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Finding the Third Proportional to 611.81 and 1,323.19

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Solution

The third proportional to 611.81 and 1,323.19 is: 2,861.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.81 : 1,323.19 = 1,323.19 : x
  2. Step 2: Convert to fraction form
    611.81/1,323.19 = 1,323.19/x
  3. Step 3: Cross multiply
    611.81x = 1,323.19 × 1,323.19
  4. Step 4: Simplify right side
    611.81x = 1,750,825.16
  5. Step 5: Solve for x
    x = 1,750,825.16/611.81
  6. Step 6: Final answer
    x = 2,861.70

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.