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Finding the Fourth Proportional to 367.18, 506.53 and 219.78

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Solution

The fourth proportional to 367.18, 506.53 and 219.78 is: 303.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.18 : 506.53 = 219.78 : x
  2. Step 2: Convert to fraction form
    367.18/506.53 = 219.78/x
  3. Step 3: Cross multiply
    367.18x = 506.53 × 219.78
  4. Step 4: Simplify right side
    367.18x = 111,321.53
  5. Step 5: Solve for x
    x = 111,321.53/367.18
  6. Step 6: Final answer
    x = 303.18

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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.