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Finding the Fourth Proportional to 218.30, 301.17 and 200.82

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Solution

The fourth proportional to 218.30, 301.17 and 200.82 is: 277.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    218.30 : 301.17 = 200.82 : x
  2. Step 2: Convert to fraction form
    218.30/301.17 = 200.82/x
  3. Step 3: Cross multiply
    218.30x = 301.17 × 200.82
  4. Step 4: Simplify right side
    218.30x = 60,479.59
  5. Step 5: Solve for x
    x = 60,479.59/218.30
  6. Step 6: Final answer
    x = 277.05

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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.