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Finding the Fourth Proportional to 236.62, 326.31 and 210.31

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Solution

The fourth proportional to 236.62, 326.31 and 210.31 is: 290.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.62 : 326.31 = 210.31 : x
  2. Step 2: Convert to fraction form
    236.62/326.31 = 210.31/x
  3. Step 3: Cross multiply
    236.62x = 326.31 × 210.31
  4. Step 4: Simplify right side
    236.62x = 68,626.26
  5. Step 5: Solve for x
    x = 68,626.26/236.62
  6. Step 6: Final answer
    x = 290.03

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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.