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Finding the Fourth Proportional to 143.60, 197.88 and 141.68

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Solution

The fourth proportional to 143.60, 197.88 and 141.68 is: 195.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    143.60 : 197.88 = 141.68 : x
  2. Step 2: Convert to fraction form
    143.60/197.88 = 141.68/x
  3. Step 3: Cross multiply
    143.60x = 197.88 × 141.68
  4. Step 4: Simplify right side
    143.60x = 28,035.64
  5. Step 5: Solve for x
    x = 28,035.64/143.60
  6. Step 6: Final answer
    x = 195.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.