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Finding the Fourth Proportional to 422.26, 581.66 and 352.30

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Solution

The fourth proportional to 422.26, 581.66 and 352.30 is: 485.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    422.26 : 581.66 = 352.30 : x
  2. Step 2: Convert to fraction form
    422.26/581.66 = 352.30/x
  3. Step 3: Cross multiply
    422.26x = 581.66 × 352.30
  4. Step 4: Simplify right side
    422.26x = 204,920.00
  5. Step 5: Solve for x
    x = 204,920.00/422.26
  6. Step 6: Final answer
    x = 485.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.