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Finding the Fourth Proportional to 674.05, 930.26 and 379.41

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Solution

The fourth proportional to 674.05, 930.26 and 379.41 is: 523.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.05 : 930.26 = 379.41 : x
  2. Step 2: Convert to fraction form
    674.05/930.26 = 379.41/x
  3. Step 3: Cross multiply
    674.05x = 930.26 × 379.41
  4. Step 4: Simplify right side
    674.05x = 352,949.95
  5. Step 5: Solve for x
    x = 352,949.95/674.05
  6. Step 6: Final answer
    x = 523.63

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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.