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Finding the Fourth Proportional to 237.22, 355.86 and 121.66

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Solution

The fourth proportional to 237.22, 355.86 and 121.66 is: 182.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.22 : 355.86 = 121.66 : x
  2. Step 2: Convert to fraction form
    237.22/355.86 = 121.66/x
  3. Step 3: Cross multiply
    237.22x = 355.86 × 121.66
  4. Step 4: Simplify right side
    237.22x = 43,293.93
  5. Step 5: Solve for x
    x = 43,293.93/237.22
  6. Step 6: Final answer
    x = 182.51

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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.