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Finding the Fourth Proportional to 276.94, 415.11 and 190.26

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Solution

The fourth proportional to 276.94, 415.11 and 190.26 is: 285.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.94 : 415.11 = 190.26 : x
  2. Step 2: Convert to fraction form
    276.94/415.11 = 190.26/x
  3. Step 3: Cross multiply
    276.94x = 415.11 × 190.26
  4. Step 4: Simplify right side
    276.94x = 78,978.83
  5. Step 5: Solve for x
    x = 78,978.83/276.94
  6. Step 6: Final answer
    x = 285.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.