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Finding the Fourth Proportional to 266.61, 367.61 and 200.31

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Solution

The fourth proportional to 266.61, 367.61 and 200.31 is: 276.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.61 : 367.61 = 200.31 : x
  2. Step 2: Convert to fraction form
    266.61/367.61 = 200.31/x
  3. Step 3: Cross multiply
    266.61x = 367.61 × 200.31
  4. Step 4: Simplify right side
    266.61x = 73,635.96
  5. Step 5: Solve for x
    x = 73,635.96/266.61
  6. Step 6: Final answer
    x = 276.19

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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.