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Finding the Fourth Proportional to 236.77, 355.92 and 219.87

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Solution

The fourth proportional to 236.77, 355.92 and 219.87 is: 330.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.77 : 355.92 = 219.87 : x
  2. Step 2: Convert to fraction form
    236.77/355.92 = 219.87/x
  3. Step 3: Cross multiply
    236.77x = 355.92 × 219.87
  4. Step 4: Simplify right side
    236.77x = 78,254.35
  5. Step 5: Solve for x
    x = 78,254.35/236.77
  6. Step 6: Final answer
    x = 330.51

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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.