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Finding the Fourth Proportional to 615.95, 849.22 and 394.52

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Solution

The fourth proportional to 615.95, 849.22 and 394.52 is: 543.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.95 : 849.22 = 394.52 : x
  2. Step 2: Convert to fraction form
    615.95/849.22 = 394.52/x
  3. Step 3: Cross multiply
    615.95x = 849.22 × 394.52
  4. Step 4: Simplify right side
    615.95x = 335,034.27
  5. Step 5: Solve for x
    x = 335,034.27/615.95
  6. Step 6: Final answer
    x = 543.94

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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.