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Finding the Fourth Proportional to 516.24, 774 and 379.44

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Solution

The fourth proportional to 516.24, 774 and 379.44 is: 568.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    516.24 : 774 = 379.44 : x
  2. Step 2: Convert to fraction form
    516.24/774 = 379.44/x
  3. Step 3: Cross multiply
    516.24x = 774 × 379.44
  4. Step 4: Simplify right side
    516.24x = 293,686.56
  5. Step 5: Solve for x
    x = 293,686.56/516.24
  6. Step 6: Final answer
    x = 568.90

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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.