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Finding the Fourth Proportional to 282.14, 422.60 and 190.43

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Solution

The fourth proportional to 282.14, 422.60 and 190.43 is: 285.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    282.14 : 422.60 = 190.43 : x
  2. Step 2: Convert to fraction form
    282.14/422.60 = 190.43/x
  3. Step 3: Cross multiply
    282.14x = 422.60 × 190.43
  4. Step 4: Simplify right side
    282.14x = 80,472.65
  5. Step 5: Solve for x
    x = 80,472.65/282.14
  6. Step 6: Final answer
    x = 285.23

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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.