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Finding the Fourth Proportional to 574.84, 793.20 and 338.80

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Solution

The fourth proportional to 574.84, 793.20 and 338.80 is: 467.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.84 : 793.20 = 338.80 : x
  2. Step 2: Convert to fraction form
    574.84/793.20 = 338.80/x
  3. Step 3: Cross multiply
    574.84x = 793.20 × 338.80
  4. Step 4: Simplify right side
    574.84x = 268,736.16
  5. Step 5: Solve for x
    x = 268,736.16/574.84
  6. Step 6: Final answer
    x = 467.50

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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.