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Finding the Fourth Proportional to 414.60, 622.12 and 198.16

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Solution

The fourth proportional to 414.60, 622.12 and 198.16 is: 297.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    414.60 : 622.12 = 198.16 : x
  2. Step 2: Convert to fraction form
    414.60/622.12 = 198.16/x
  3. Step 3: Cross multiply
    414.60x = 622.12 × 198.16
  4. Step 4: Simplify right side
    414.60x = 123,279.30
  5. Step 5: Solve for x
    x = 123,279.30/414.60
  6. Step 6: Final answer
    x = 297.35

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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.