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Finding the Fourth Proportional to 626.68, 940.28 and 337.78

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Solution

The fourth proportional to 626.68, 940.28 and 337.78 is: 506.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.68 : 940.28 = 337.78 : x
  2. Step 2: Convert to fraction form
    626.68/940.28 = 337.78/x
  3. Step 3: Cross multiply
    626.68x = 940.28 × 337.78
  4. Step 4: Simplify right side
    626.68x = 317,607.78
  5. Step 5: Solve for x
    x = 317,607.78/626.68
  6. Step 6: Final answer
    x = 506.81

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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.