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Finding the Fourth Proportional to 146.31, 218.04 and 136.74

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Solution

The fourth proportional to 146.31, 218.04 and 136.74 is: 203.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.31 : 218.04 = 136.74 : x
  2. Step 2: Convert to fraction form
    146.31/218.04 = 136.74/x
  3. Step 3: Cross multiply
    146.31x = 218.04 × 136.74
  4. Step 4: Simplify right side
    146.31x = 29,814.64
  5. Step 5: Solve for x
    x = 29,814.64/146.31
  6. Step 6: Final answer
    x = 203.78

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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.