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Finding the Fourth Proportional to 237.31, 355.74 and 115.50

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Solution

The fourth proportional to 237.31, 355.74 and 115.50 is: 173.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.31 : 355.74 = 115.50 : x
  2. Step 2: Convert to fraction form
    237.31/355.74 = 115.50/x
  3. Step 3: Cross multiply
    237.31x = 355.74 × 115.50
  4. Step 4: Simplify right side
    237.31x = 41,087.97
  5. Step 5: Solve for x
    x = 41,087.97/237.31
  6. Step 6: Final answer
    x = 173.14

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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.