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Finding the Fourth Proportional to 535.05, 738.39 and 348.69

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Solution

The fourth proportional to 535.05, 738.39 and 348.69 is: 481.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.05 : 738.39 = 348.69 : x
  2. Step 2: Convert to fraction form
    535.05/738.39 = 348.69/x
  3. Step 3: Cross multiply
    535.05x = 738.39 × 348.69
  4. Step 4: Simplify right side
    535.05x = 257,469.21
  5. Step 5: Solve for x
    x = 257,469.21/535.05
  6. Step 6: Final answer
    x = 481.21

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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.