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Finding the Fourth Proportional to 516.95, 774.76 and 242.43

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Solution

The fourth proportional to 516.95, 774.76 and 242.43 is: 363.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    516.95 : 774.76 = 242.43 : x
  2. Step 2: Convert to fraction form
    516.95/774.76 = 242.43/x
  3. Step 3: Cross multiply
    516.95x = 774.76 × 242.43
  4. Step 4: Simplify right side
    516.95x = 187,823.85
  5. Step 5: Solve for x
    x = 187,823.85/516.95
  6. Step 6: Final answer
    x = 363.33

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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.