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Finding the Third Proportional to 640.88 and 1,150.13

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Solution

The third proportional to 640.88 and 1,150.13 is: 2,064.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    640.88 : 1,150.13 = 1,150.13 : x
  2. Step 2: Convert to fraction form
    640.88/1,150.13 = 1,150.13/x
  3. Step 3: Cross multiply
    640.88x = 1,150.13 × 1,150.13
  4. Step 4: Simplify right side
    640.88x = 1,322,787.52
  5. Step 5: Solve for x
    x = 1,322,787.52/640.88
  6. Step 6: Final answer
    x = 2,064.03

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Why These Related Problems?

These problems maintain the same ratio (1.79) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.