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Finding the Fourth Proportional to 615.38, 849.16 and 349.84

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Solution

The fourth proportional to 615.38, 849.16 and 349.84 is: 482.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.38 : 849.16 = 349.84 : x
  2. Step 2: Convert to fraction form
    615.38/849.16 = 349.84/x
  3. Step 3: Cross multiply
    615.38x = 849.16 × 349.84
  4. Step 4: Simplify right side
    615.38x = 297,070.13
  5. Step 5: Solve for x
    x = 297,070.13/615.38
  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.