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Finding the Fourth Proportional to 237.58, 356.45 and 115.79

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Solution

The fourth proportional to 237.58, 356.45 and 115.79 is: 173.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.58 : 356.45 = 115.79 : x
  2. Step 2: Convert to fraction form
    237.58/356.45 = 115.79/x
  3. Step 3: Cross multiply
    237.58x = 356.45 × 115.79
  4. Step 4: Simplify right side
    237.58x = 41,270.98
  5. Step 5: Solve for x
    x = 41,270.98/237.58
  6. Step 6: Final answer
    x = 173.72

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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.