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Finding the Fourth Proportional to 338.82, 467.80 and 207.90

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Solution

The fourth proportional to 338.82, 467.80 and 207.90 is: 287.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.82 : 467.80 = 207.90 : x
  2. Step 2: Convert to fraction form
    338.82/467.80 = 207.90/x
  3. Step 3: Cross multiply
    338.82x = 467.80 × 207.90
  4. Step 4: Simplify right side
    338.82x = 97,255.62
  5. Step 5: Solve for x
    x = 97,255.62/338.82
  6. Step 6: Final answer
    x = 287.04

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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.