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Finding the Fourth Proportional to 516.07, 773.94 and 207.76

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Solution

The fourth proportional to 516.07, 773.94 and 207.76 is: 311.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    516.07 : 773.94 = 207.76 : x
  2. Step 2: Convert to fraction form
    516.07/773.94 = 207.76/x
  3. Step 3: Cross multiply
    516.07x = 773.94 × 207.76
  4. Step 4: Simplify right side
    516.07x = 160,793.77
  5. Step 5: Solve for x
    x = 160,793.77/516.07
  6. Step 6: Final answer
    x = 311.57

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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.