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Finding the Fourth Proportional to 361.26, 498.26 and 243.19

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Solution

The fourth proportional to 361.26, 498.26 and 243.19 is: 335.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.26 : 498.26 = 243.19 : x
  2. Step 2: Convert to fraction form
    361.26/498.26 = 243.19/x
  3. Step 3: Cross multiply
    361.26x = 498.26 × 243.19
  4. Step 4: Simplify right side
    361.26x = 121,171.85
  5. Step 5: Solve for x
    x = 121,171.85/361.26
  6. Step 6: Final answer
    x = 335.41

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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.