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Finding the Third Proportional to 726.75 and 1,603.88

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Solution

The third proportional to 726.75 and 1,603.88 is: 3,539.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    726.75 : 1,603.88 = 1,603.88 : x
  2. Step 2: Convert to fraction form
    726.75/1,603.88 = 1,603.88/x
  3. Step 3: Cross multiply
    726.75x = 1,603.88 × 1,603.88
  4. Step 4: Simplify right side
    726.75x = 2,572,415.02
  5. Step 5: Solve for x
    x = 2,572,415.02/726.75
  6. Step 6: Final answer
    x = 3,539.61

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.