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Finding the Fourth Proportional to 276.36, 411.69 and 271.77

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Solution

The fourth proportional to 276.36, 411.69 and 271.77 is: 404.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.36 : 411.69 = 271.77 : x
  2. Step 2: Convert to fraction form
    276.36/411.69 = 271.77/x
  3. Step 3: Cross multiply
    276.36x = 411.69 × 271.77
  4. Step 4: Simplify right side
    276.36x = 111,884.99
  5. Step 5: Solve for x
    x = 111,884.99/276.36
  6. Step 6: Final answer
    x = 404.85

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.