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Finding the Fourth Proportional to 535.80, 738.99 and 349.35

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Solution

The fourth proportional to 535.80, 738.99 and 349.35 is: 481.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.80 : 738.99 = 349.35 : x
  2. Step 2: Convert to fraction form
    535.80/738.99 = 349.35/x
  3. Step 3: Cross multiply
    535.80x = 738.99 × 349.35
  4. Step 4: Simplify right side
    535.80x = 258,166.16
  5. Step 5: Solve for x
    x = 258,166.16/535.80
  6. Step 6: Final answer
    x = 481.83

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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.