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Finding the Fourth Proportional to 362.10, 499.82 and 212.78

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Solution

The fourth proportional to 362.10, 499.82 and 212.78 is: 293.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    362.10 : 499.82 = 212.78 : x
  2. Step 2: Convert to fraction form
    362.10/499.82 = 212.78/x
  3. Step 3: Cross multiply
    362.10x = 499.82 × 212.78
  4. Step 4: Simplify right side
    362.10x = 106,351.70
  5. Step 5: Solve for x
    x = 106,351.70/362.10
  6. Step 6: Final answer
    x = 293.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.