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Finding the Fourth Proportional to 323.58, 484.32 and 273.78

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Solution

The fourth proportional to 323.58, 484.32 and 273.78 is: 409.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.58 : 484.32 = 273.78 : x
  2. Step 2: Convert to fraction form
    323.58/484.32 = 273.78/x
  3. Step 3: Cross multiply
    323.58x = 484.32 × 273.78
  4. Step 4: Simplify right side
    323.58x = 132,597.13
  5. Step 5: Solve for x
    x = 132,597.13/323.58
  6. Step 6: Final answer
    x = 409.78

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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.