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Finding the Fourth Proportional to 211.34, 289.82 and 200.81

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Solution

The fourth proportional to 211.34, 289.82 and 200.81 is: 275.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    211.34 : 289.82 = 200.81 : x
  2. Step 2: Convert to fraction form
    211.34/289.82 = 200.81/x
  3. Step 3: Cross multiply
    211.34x = 289.82 × 200.81
  4. Step 4: Simplify right side
    211.34x = 58,196.30
  5. Step 5: Solve for x
    x = 58,196.30/211.34
  6. Step 6: Final answer
    x = 275.37

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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.