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Finding the Fourth Proportional to 236.17, 353.72 and 212.41

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Solution

The fourth proportional to 236.17, 353.72 and 212.41 is: 318.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.17 : 353.72 = 212.41 : x
  2. Step 2: Convert to fraction form
    236.17/353.72 = 212.41/x
  3. Step 3: Cross multiply
    236.17x = 353.72 × 212.41
  4. Step 4: Simplify right side
    236.17x = 75,132.60
  5. Step 5: Solve for x
    x = 75,132.60/236.17
  6. Step 6: Final answer
    x = 318.13

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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.