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Finding the Fourth Proportional to 367.30, 506.87 and 219.90

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Solution

The fourth proportional to 367.30, 506.87 and 219.90 is: 303.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.30 : 506.87 = 219.90 : x
  2. Step 2: Convert to fraction form
    367.30/506.87 = 219.90/x
  3. Step 3: Cross multiply
    367.30x = 506.87 × 219.90
  4. Step 4: Simplify right side
    367.30x = 111,460.71
  5. Step 5: Solve for x
    x = 111,460.71/367.30
  6. Step 6: Final answer
    x = 303.46

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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.