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Finding the Fourth Proportional to 236.60, 326.46 and 143.32

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Solution

The fourth proportional to 236.60, 326.46 and 143.32 is: 197.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.60 : 326.46 = 143.32 : x
  2. Step 2: Convert to fraction form
    236.60/326.46 = 143.32/x
  3. Step 3: Cross multiply
    236.60x = 326.46 × 143.32
  4. Step 4: Simplify right side
    236.60x = 46,788.25
  5. Step 5: Solve for x
    x = 46,788.25/236.60
  6. Step 6: Final answer
    x = 197.75

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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.