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Finding the Fourth Proportional to 146.28, 218.37 and 126.93

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Solution

The fourth proportional to 146.28, 218.37 and 126.93 is: 189.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.28 : 218.37 = 126.93 : x
  2. Step 2: Convert to fraction form
    146.28/218.37 = 126.93/x
  3. Step 3: Cross multiply
    146.28x = 218.37 × 126.93
  4. Step 4: Simplify right side
    146.28x = 27,717.70
  5. Step 5: Solve for x
    x = 27,717.70/146.28
  6. Step 6: Final answer
    x = 189.48

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.