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Finding the Fourth Proportional to 375.89, 518.96 and 243.23

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Solution

The fourth proportional to 375.89, 518.96 and 243.23 is: 335.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.89 : 518.96 = 243.23 : x
  2. Step 2: Convert to fraction form
    375.89/518.96 = 243.23/x
  3. Step 3: Cross multiply
    375.89x = 518.96 × 243.23
  4. Step 4: Simplify right side
    375.89x = 126,228.55
  5. Step 5: Solve for x
    x = 126,228.55/375.89
  6. Step 6: Final answer
    x = 335.81

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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.