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Finding the Fourth Proportional to 615.39, 849.22 and 349.82

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Solution

The fourth proportional to 615.39, 849.22 and 349.82 is: 482.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.39 : 849.22 = 349.82 : x
  2. Step 2: Convert to fraction form
    615.39/849.22 = 349.82/x
  3. Step 3: Cross multiply
    615.39x = 849.22 × 349.82
  4. Step 4: Simplify right side
    615.39x = 297,074.14
  5. Step 5: Solve for x
    x = 297,074.14/615.39
  6. Step 6: Final answer
    x = 482.74

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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.