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Finding the Fourth Proportional to 535.20, 738.91 and 349.02

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Solution

The fourth proportional to 535.20, 738.91 and 349.02 is: 481.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.20 : 738.91 = 349.02 : x
  2. Step 2: Convert to fraction form
    535.20/738.91 = 349.02/x
  3. Step 3: Cross multiply
    535.20x = 738.91 × 349.02
  4. Step 4: Simplify right side
    535.20x = 257,891.02
  5. Step 5: Solve for x
    x = 257,891.02/535.20
  6. Step 6: Final answer
    x = 481.86

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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.