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Finding the Fourth Proportional to 733.80, 1,100.28 and 322.80

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Solution

The fourth proportional to 733.80, 1,100.28 and 322.80 is: 484.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    733.80 : 1,100.28 = 322.80 : x
  2. Step 2: Convert to fraction form
    733.80/1,100.28 = 322.80/x
  3. Step 3: Cross multiply
    733.80x = 1,100.28 × 322.80
  4. Step 4: Simplify right side
    733.80x = 355,170.38
  5. Step 5: Solve for x
    x = 355,170.38/733.80
  6. Step 6: Final answer
    x = 484.02

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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.