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Finding the Fourth Proportional to 190.44, 262.67 and 161.20

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Solution

The fourth proportional to 190.44, 262.67 and 161.20 is: 222.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.44 : 262.67 = 161.20 : x
  2. Step 2: Convert to fraction form
    190.44/262.67 = 161.20/x
  3. Step 3: Cross multiply
    190.44x = 262.67 × 161.20
  4. Step 4: Simplify right side
    190.44x = 42,343.80
  5. Step 5: Solve for x
    x = 42,343.80/190.44
  6. Step 6: Final answer
    x = 222.35

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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.