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Finding the Fourth Proportional to 146.44, 218.57 and 143.92

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Solution

The fourth proportional to 146.44, 218.57 and 143.92 is: 214.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.44 : 218.57 = 143.92 : x
  2. Step 2: Convert to fraction form
    146.44/218.57 = 143.92/x
  3. Step 3: Cross multiply
    146.44x = 218.57 × 143.92
  4. Step 4: Simplify right side
    146.44x = 31,456.59
  5. Step 5: Solve for x
    x = 31,456.59/146.44
  6. Step 6: Final answer
    x = 214.81

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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.