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Finding the Fourth Proportional to 236.58, 326.58 and 211.98

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Solution

The fourth proportional to 236.58, 326.58 and 211.98 is: 292.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.58 : 326.58 = 211.98 : x
  2. Step 2: Convert to fraction form
    236.58/326.58 = 211.98/x
  3. Step 3: Cross multiply
    236.58x = 326.58 × 211.98
  4. Step 4: Simplify right side
    236.58x = 69,228.43
  5. Step 5: Solve for x
    x = 69,228.43/236.58
  6. Step 6: Final answer
    x = 292.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.