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Finding the Fourth Proportional to 626.46, 939.51 and 333.78

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Solution

The fourth proportional to 626.46, 939.51 and 333.78 is: 500.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.46 : 939.51 = 333.78 : x
  2. Step 2: Convert to fraction form
    626.46/939.51 = 333.78/x
  3. Step 3: Cross multiply
    626.46x = 939.51 × 333.78
  4. Step 4: Simplify right side
    626.46x = 313,589.65
  5. Step 5: Solve for x
    x = 313,589.65/626.46
  6. Step 6: Final answer
    x = 500.57

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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.