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Finding the Fourth Proportional to 282.45, 422.60 and 154.29

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Solution

The fourth proportional to 282.45, 422.60 and 154.29 is: 230.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    282.45 : 422.60 = 154.29 : x
  2. Step 2: Convert to fraction form
    282.45/422.60 = 154.29/x
  3. Step 3: Cross multiply
    282.45x = 422.60 × 154.29
  4. Step 4: Simplify right side
    282.45x = 65,202.18
  5. Step 5: Solve for x
    x = 65,202.18/282.45
  6. Step 6: Final answer
    x = 230.85

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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.