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Finding the Fourth Proportional to 349.31, 484.33 and 347.79

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Solution

The fourth proportional to 349.31, 484.33 and 347.79 is: 482.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.31 : 484.33 = 347.79 : x
  2. Step 2: Convert to fraction form
    349.31/484.33 = 347.79/x
  3. Step 3: Cross multiply
    349.31x = 484.33 × 347.79
  4. Step 4: Simplify right side
    349.31x = 168,446.73
  5. Step 5: Solve for x
    x = 168,446.73/349.31
  6. Step 6: Final answer
    x = 482.22

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.