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Finding the Fourth Proportional to 146.40, 200.40 and 141.60

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Solution

The fourth proportional to 146.40, 200.40 and 141.60 is: 193.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.40 : 200.40 = 141.60 : x
  2. Step 2: Convert to fraction form
    146.40/200.40 = 141.60/x
  3. Step 3: Cross multiply
    146.40x = 200.40 × 141.60
  4. Step 4: Simplify right side
    146.40x = 28,376.64
  5. Step 5: Solve for x
    x = 28,376.64/146.40
  6. Step 6: Final answer
    x = 193.83

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.