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Finding the Fourth Proportional to 236.15, 353.35 and 143.27

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Solution

The fourth proportional to 236.15, 353.35 and 143.27 is: 214.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.15 : 353.35 = 143.27 : x
  2. Step 2: Convert to fraction form
    236.15/353.35 = 143.27/x
  3. Step 3: Cross multiply
    236.15x = 353.35 × 143.27
  4. Step 4: Simplify right side
    236.15x = 50,621.97
  5. Step 5: Solve for x
    x = 50,621.97/236.15
  6. Step 6: Final answer
    x = 214.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.