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Finding the Fourth Proportional to 322.87, 445.41 and 190.05

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Solution

The fourth proportional to 322.87, 445.41 and 190.05 is: 262.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.87 : 445.41 = 190.05 : x
  2. Step 2: Convert to fraction form
    322.87/445.41 = 190.05/x
  3. Step 3: Cross multiply
    322.87x = 445.41 × 190.05
  4. Step 4: Simplify right side
    322.87x = 84,650.17
  5. Step 5: Solve for x
    x = 84,650.17/322.87
  6. Step 6: Final answer
    x = 262.18

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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.