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Finding the Fourth Proportional to 237.28, 355.58 and 121.57

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Solution

The fourth proportional to 237.28, 355.58 and 121.57 is: 182.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.28 : 355.58 = 121.57 : x
  2. Step 2: Convert to fraction form
    237.28/355.58 = 121.57/x
  3. Step 3: Cross multiply
    237.28x = 355.58 × 121.57
  4. Step 4: Simplify right side
    237.28x = 43,227.86
  5. Step 5: Solve for x
    x = 43,227.86/237.28
  6. Step 6: Final answer
    x = 182.18

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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.