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Finding the Fourth Proportional to 243.38, 363.24 and 236.90

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Solution

The fourth proportional to 243.38, 363.24 and 236.90 is: 353.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.38 : 363.24 = 236.90 : x
  2. Step 2: Convert to fraction form
    243.38/363.24 = 236.90/x
  3. Step 3: Cross multiply
    243.38x = 363.24 × 236.90
  4. Step 4: Simplify right side
    243.38x = 86,051.56
  5. Step 5: Solve for x
    x = 86,051.56/243.38
  6. Step 6: Final answer
    x = 353.57

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.