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Finding the Fourth Proportional to 422.87, 580.44 and 375.19

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Solution

The fourth proportional to 422.87, 580.44 and 375.19 is: 515.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    422.87 : 580.44 = 375.19 : x
  2. Step 2: Convert to fraction form
    422.87/580.44 = 375.19/x
  3. Step 3: Cross multiply
    422.87x = 580.44 × 375.19
  4. Step 4: Simplify right side
    422.87x = 217,778.50
  5. Step 5: Solve for x
    x = 217,778.50/422.87
  6. Step 6: Final answer
    x = 515.01

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.