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Finding the Fourth Proportional to 414.99, 622.27 and 140.98

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Solution

The fourth proportional to 414.99, 622.27 and 140.98 is: 211.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    414.99 : 622.27 = 140.98 : x
  2. Step 2: Convert to fraction form
    414.99/622.27 = 140.98/x
  3. Step 3: Cross multiply
    414.99x = 622.27 × 140.98
  4. Step 4: Simplify right side
    414.99x = 87,727.62
  5. Step 5: Solve for x
    x = 87,727.62/414.99
  6. Step 6: Final answer
    x = 211.40

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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.