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Finding the Fourth Proportional to 300.92, 451.58 and 219.92

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Solution

The fourth proportional to 300.92, 451.58 and 219.92 is: 330.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.92 : 451.58 = 219.92 : x
  2. Step 2: Convert to fraction form
    300.92/451.58 = 219.92/x
  3. Step 3: Cross multiply
    300.92x = 451.58 × 219.92
  4. Step 4: Simplify right side
    300.92x = 99,308.12
  5. Step 5: Solve for x
    x = 99,308.12/300.92
  6. Step 6: Final answer
    x = 330.02

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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.