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Finding the Fourth Proportional to 237.36, 355.68 and 115.44

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Solution

The fourth proportional to 237.36, 355.68 and 115.44 is: 172.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.36 : 355.68 = 115.44 : x
  2. Step 2: Convert to fraction form
    237.36/355.68 = 115.44/x
  3. Step 3: Cross multiply
    237.36x = 355.68 × 115.44
  4. Step 4: Simplify right side
    237.36x = 41,059.70
  5. Step 5: Solve for x
    x = 41,059.70/237.36
  6. Step 6: Final answer
    x = 172.98

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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.