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Finding the Fourth Proportional to 516.20, 774.90 and 334.35

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Solution

The fourth proportional to 516.20, 774.90 and 334.35 is: 501.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    516.20 : 774.90 = 334.35 : x
  2. Step 2: Convert to fraction form
    516.20/774.90 = 334.35/x
  3. Step 3: Cross multiply
    516.20x = 774.90 × 334.35
  4. Step 4: Simplify right side
    516.20x = 259,087.82
  5. Step 5: Solve for x
    x = 259,087.82/516.20
  6. Step 6: Final answer
    x = 501.92

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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.