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Finding the Fourth Proportional to 516.37, 774.23 and 242.55

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Solution

The fourth proportional to 516.37, 774.23 and 242.55 is: 363.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    516.37 : 774.23 = 242.55 : x
  2. Step 2: Convert to fraction form
    516.37/774.23 = 242.55/x
  3. Step 3: Cross multiply
    516.37x = 774.23 × 242.55
  4. Step 4: Simplify right side
    516.37x = 187,789.49
  5. Step 5: Solve for x
    x = 187,789.49/516.37
  6. Step 6: Final answer
    x = 363.67

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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.