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Finding the Fourth Proportional to 369.11, 509.82 and 276.27

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Solution

The fourth proportional to 369.11, 509.82 and 276.27 is: 381.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.11 : 509.82 = 276.27 : x
  2. Step 2: Convert to fraction form
    369.11/509.82 = 276.27/x
  3. Step 3: Cross multiply
    369.11x = 509.82 × 276.27
  4. Step 4: Simplify right side
    369.11x = 140,847.97
  5. Step 5: Solve for x
    x = 140,847.97/369.11
  6. Step 6: Final answer
    x = 381.59

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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.