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Finding the Fourth Proportional to 146.39, 218.52 and 125.87

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Solution

The fourth proportional to 146.39, 218.52 and 125.87 is: 187.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.39 : 218.52 = 125.87 : x
  2. Step 2: Convert to fraction form
    146.39/218.52 = 125.87/x
  3. Step 3: Cross multiply
    146.39x = 218.52 × 125.87
  4. Step 4: Simplify right side
    146.39x = 27,504.02
  5. Step 5: Solve for x
    x = 27,504.02/146.39
  6. Step 6: Final answer
    x = 187.89

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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.