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Finding the Fourth Proportional to 353.26, 487.80 and 236.89

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Solution

The fourth proportional to 353.26, 487.80 and 236.89 is: 327.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.26 : 487.80 = 236.89 : x
  2. Step 2: Convert to fraction form
    353.26/487.80 = 236.89/x
  3. Step 3: Cross multiply
    353.26x = 487.80 × 236.89
  4. Step 4: Simplify right side
    353.26x = 115,554.94
  5. Step 5: Solve for x
    x = 115,554.94/353.26
  6. Step 6: Final answer
    x = 327.11

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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.