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Finding the Fourth Proportional to 190.88, 264 and 161.68

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Solution

The fourth proportional to 190.88, 264 and 161.68 is: 223.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.88 : 264 = 161.68 : x
  2. Step 2: Convert to fraction form
    190.88/264 = 161.68/x
  3. Step 3: Cross multiply
    190.88x = 264 × 161.68
  4. Step 4: Simplify right side
    190.88x = 42,683.52
  5. Step 5: Solve for x
    x = 42,683.52/190.88
  6. Step 6: Final answer
    x = 223.61

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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.