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Finding the Fourth Proportional to 276.86, 415.96 and 226.14

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Solution

The fourth proportional to 276.86, 415.96 and 226.14 is: 339.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.86 : 415.96 = 226.14 : x
  2. Step 2: Convert to fraction form
    276.86/415.96 = 226.14/x
  3. Step 3: Cross multiply
    276.86x = 415.96 × 226.14
  4. Step 4: Simplify right side
    276.86x = 94,065.19
  5. Step 5: Solve for x
    x = 94,065.19/276.86
  6. Step 6: Final answer
    x = 339.76

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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.