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Finding the Fourth Proportional to 237.75, 356.14 and 115.64

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Solution

The fourth proportional to 237.75, 356.14 and 115.64 is: 173.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.75 : 356.14 = 115.64 : x
  2. Step 2: Convert to fraction form
    237.75/356.14 = 115.64/x
  3. Step 3: Cross multiply
    237.75x = 356.14 × 115.64
  4. Step 4: Simplify right side
    237.75x = 41,184.03
  5. Step 5: Solve for x
    x = 41,184.03/237.75
  6. Step 6: Final answer
    x = 173.22

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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.