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Finding the Fourth Proportional to 574.80, 793.08 and 338.70

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Solution

The fourth proportional to 574.80, 793.08 and 338.70 is: 467.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.80 : 793.08 = 338.70 : x
  2. Step 2: Convert to fraction form
    574.80/793.08 = 338.70/x
  3. Step 3: Cross multiply
    574.80x = 793.08 × 338.70
  4. Step 4: Simplify right side
    574.80x = 268,616.20
  5. Step 5: Solve for x
    x = 268,616.20/574.80
  6. Step 6: Final answer
    x = 467.32

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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.