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Finding the Fourth Proportional to 282.42, 422.87 and 236.66

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Solution

The fourth proportional to 282.42, 422.87 and 236.66 is: 354.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    282.42 : 422.87 = 236.66 : x
  2. Step 2: Convert to fraction form
    282.42/422.87 = 236.66/x
  3. Step 3: Cross multiply
    282.42x = 422.87 × 236.66
  4. Step 4: Simplify right side
    282.42x = 100,073.12
  5. Step 5: Solve for x
    x = 100,073.12/282.42
  6. Step 6: Final answer
    x = 354.34

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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.