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Finding the Fourth Proportional to 726.75, 1,089.13 and 335.89

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Solution

The fourth proportional to 726.75, 1,089.13 and 335.89 is: 503.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    726.75 : 1,089.13 = 335.89 : x
  2. Step 2: Convert to fraction form
    726.75/1,089.13 = 335.89/x
  3. Step 3: Cross multiply
    726.75x = 1,089.13 × 335.89
  4. Step 4: Simplify right side
    726.75x = 365,824.31
  5. Step 5: Solve for x
    x = 365,824.31/726.75
  6. Step 6: Final answer
    x = 503.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.