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Finding the Fourth Proportional to 733.70, 1,100.75 and 300.75

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Solution

The fourth proportional to 733.70, 1,100.75 and 300.75 is: 451.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    733.70 : 1,100.75 = 300.75 : x
  2. Step 2: Convert to fraction form
    733.70/1,100.75 = 300.75/x
  3. Step 3: Cross multiply
    733.70x = 1,100.75 × 300.75
  4. Step 4: Simplify right side
    733.70x = 331,049.06
  5. Step 5: Solve for x
    x = 331,049.06/733.70
  6. Step 6: Final answer
    x = 451.21

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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.