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Finding the Fourth Proportional to 615.54, 849.50 and 379.56

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Solution

The fourth proportional to 615.54, 849.50 and 379.56 is: 523.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.54 : 849.50 = 379.56 : x
  2. Step 2: Convert to fraction form
    615.54/849.50 = 379.56/x
  3. Step 3: Cross multiply
    615.54x = 849.50 × 379.56
  4. Step 4: Simplify right side
    615.54x = 322,436.22
  5. Step 5: Solve for x
    x = 322,436.22/615.54
  6. Step 6: Final answer
    x = 523.83

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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.