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Finding the Fourth Proportional to 276.07, 411.68 and 273.61

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Solution

The fourth proportional to 276.07, 411.68 and 273.61 is: 408.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.07 : 411.68 = 273.61 : x
  2. Step 2: Convert to fraction form
    276.07/411.68 = 273.61/x
  3. Step 3: Cross multiply
    276.07x = 411.68 × 273.61
  4. Step 4: Simplify right side
    276.07x = 112,639.76
  5. Step 5: Solve for x
    x = 112,639.76/276.07
  6. Step 6: Final answer
    x = 408.01

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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.