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Finding the Fourth Proportional to 219.24, 330.14 and 198.60

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Solution

The fourth proportional to 219.24, 330.14 and 198.60 is: 299.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.24 : 330.14 = 198.60 : x
  2. Step 2: Convert to fraction form
    219.24/330.14 = 198.60/x
  3. Step 3: Cross multiply
    219.24x = 330.14 × 198.60
  4. Step 4: Simplify right side
    219.24x = 65,565.80
  5. Step 5: Solve for x
    x = 65,565.80/219.24
  6. Step 6: Final answer
    x = 299.06

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.