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Finding the Fourth Proportional to 535.18, 738.31 and 338.65

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Solution

The fourth proportional to 535.18, 738.31 and 338.65 is: 467.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.18 : 738.31 = 338.65 : x
  2. Step 2: Convert to fraction form
    535.18/738.31 = 338.65/x
  3. Step 3: Cross multiply
    535.18x = 738.31 × 338.65
  4. Step 4: Simplify right side
    535.18x = 250,028.68
  5. Step 5: Solve for x
    x = 250,028.68/535.18
  6. Step 6: Final answer
    x = 467.19

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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.