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Finding the Fourth Proportional to 480.75, 663.44 and 273.79

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Solution

The fourth proportional to 480.75, 663.44 and 273.79 is: 377.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.75 : 663.44 = 273.79 : x
  2. Step 2: Convert to fraction form
    480.75/663.44 = 273.79/x
  3. Step 3: Cross multiply
    480.75x = 663.44 × 273.79
  4. Step 4: Simplify right side
    480.75x = 181,641.87
  5. Step 5: Solve for x
    x = 181,641.87/480.75
  6. Step 6: Final answer
    x = 377.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.