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Finding the Fourth Proportional to 146.60, 218.40 and 141.44

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Solution

The fourth proportional to 146.60, 218.40 and 141.44 is: 210.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.60 : 218.40 = 141.44 : x
  2. Step 2: Convert to fraction form
    146.60/218.40 = 141.44/x
  3. Step 3: Cross multiply
    146.60x = 218.40 × 141.44
  4. Step 4: Simplify right side
    146.60x = 30,890.50
  5. Step 5: Solve for x
    x = 30,890.50/146.60
  6. Step 6: Final answer
    x = 210.71

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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.