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Finding the Fourth Proportional to 516.05, 773.37 and 272.75

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Solution

The fourth proportional to 516.05, 773.37 and 272.75 is: 408.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    516.05 : 773.37 = 272.75 : x
  2. Step 2: Convert to fraction form
    516.05/773.37 = 272.75/x
  3. Step 3: Cross multiply
    516.05x = 773.37 × 272.75
  4. Step 4: Simplify right side
    516.05x = 210,932.80
  5. Step 5: Solve for x
    x = 210,932.80/516.05
  6. Step 6: Final answer
    x = 408.75

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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.