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Finding the Fourth Proportional to 236.71, 355.19 and 92.39

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Solution

The fourth proportional to 236.71, 355.19 and 92.39 is: 138.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.71 : 355.19 = 92.39 : x
  2. Step 2: Convert to fraction form
    236.71/355.19 = 92.39/x
  3. Step 3: Cross multiply
    236.71x = 355.19 × 92.39
  4. Step 4: Simplify right side
    236.71x = 32,816.24
  5. Step 5: Solve for x
    x = 32,816.24/236.71
  6. Step 6: Final answer
    x = 138.64

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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.