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Finding the Fourth Proportional to 754.04, 1,131.68 and 321.52

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Solution

The fourth proportional to 754.04, 1,131.68 and 321.52 is: 482.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    754.04 : 1,131.68 = 321.52 : x
  2. Step 2: Convert to fraction form
    754.04/1,131.68 = 321.52/x
  3. Step 3: Cross multiply
    754.04x = 1,131.68 × 321.52
  4. Step 4: Simplify right side
    754.04x = 363,857.75
  5. Step 5: Solve for x
    x = 363,857.75/754.04
  6. Step 6: Final answer
    x = 482.54

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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.