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Finding the Fourth Proportional to 207.12, 283.65 and 204.42

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Solution

The fourth proportional to 207.12, 283.65 and 204.42 is: 279.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    207.12 : 283.65 = 204.42 : x
  2. Step 2: Convert to fraction form
    207.12/283.65 = 204.42/x
  3. Step 3: Cross multiply
    207.12x = 283.65 × 204.42
  4. Step 4: Simplify right side
    207.12x = 57,983.73
  5. Step 5: Solve for x
    x = 57,983.73/207.12
  6. Step 6: Final answer
    x = 279.95

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.