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Finding the Fourth Proportional to 266.52, 367.74 and 255.90

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Solution

The fourth proportional to 266.52, 367.74 and 255.90 is: 353.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.52 : 367.74 = 255.90 : x
  2. Step 2: Convert to fraction form
    266.52/367.74 = 255.90/x
  3. Step 3: Cross multiply
    266.52x = 367.74 × 255.90
  4. Step 4: Simplify right side
    266.52x = 94,104.67
  5. Step 5: Solve for x
    x = 94,104.67/266.52
  6. Step 6: Final answer
    x = 353.09

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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.