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Finding the Fourth Proportional to 236.69, 355.10 and 92.51

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Solution

The fourth proportional to 236.69, 355.10 and 92.51 is: 138.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.69 : 355.10 = 92.51 : x
  2. Step 2: Convert to fraction form
    236.69/355.10 = 92.51/x
  3. Step 3: Cross multiply
    236.69x = 355.10 × 92.51
  4. Step 4: Simplify right side
    236.69x = 32,848.06
  5. Step 5: Solve for x
    x = 32,848.06/236.69
  6. Step 6: Final answer
    x = 138.78

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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.