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Finding the Fourth Proportional to 237.38, 355.77 and 121.80

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Solution

The fourth proportional to 237.38, 355.77 and 121.80 is: 182.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.38 : 355.77 = 121.80 : x
  2. Step 2: Convert to fraction form
    237.38/355.77 = 121.80/x
  3. Step 3: Cross multiply
    237.38x = 355.77 × 121.80
  4. Step 4: Simplify right side
    237.38x = 43,333.78
  5. Step 5: Solve for x
    x = 43,333.78/237.38
  6. Step 6: Final answer
    x = 182.55

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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.