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Finding the Fourth Proportional to 535.02, 738.20 and 338.78

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Solution

The fourth proportional to 535.02, 738.20 and 338.78 is: 467.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.02 : 738.20 = 338.78 : x
  2. Step 2: Convert to fraction form
    535.02/738.20 = 338.78/x
  3. Step 3: Cross multiply
    535.02x = 738.20 × 338.78
  4. Step 4: Simplify right side
    535.02x = 250,087.40
  5. Step 5: Solve for x
    x = 250,087.40/535.02
  6. Step 6: Final answer
    x = 467.44

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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.