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Finding the Fourth Proportional to 237.45, 355.85 and 129.33

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Solution

The fourth proportional to 237.45, 355.85 and 129.33 is: 193.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.45 : 355.85 = 129.33 : x
  2. Step 2: Convert to fraction form
    237.45/355.85 = 129.33/x
  3. Step 3: Cross multiply
    237.45x = 355.85 × 129.33
  4. Step 4: Simplify right side
    237.45x = 46,021.43
  5. Step 5: Solve for x
    x = 46,021.43/237.45
  6. Step 6: Final answer
    x = 193.82

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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.