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Finding the Fourth Proportional to 626.74, 940.56 and 353.05

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Solution

The fourth proportional to 626.74, 940.56 and 353.05 is: 529.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.74 : 940.56 = 353.05 : x
  2. Step 2: Convert to fraction form
    626.74/940.56 = 353.05/x
  3. Step 3: Cross multiply
    626.74x = 940.56 × 353.05
  4. Step 4: Simplify right side
    626.74x = 332,064.71
  5. Step 5: Solve for x
    x = 332,064.71/626.74
  6. Step 6: Final answer
    x = 529.83

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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.