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Finding the Fourth Proportional to 375.31, 518.26 and 235.67

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Solution

The fourth proportional to 375.31, 518.26 and 235.67 is: 325.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.31 : 518.26 = 235.67 : x
  2. Step 2: Convert to fraction form
    375.31/518.26 = 235.67/x
  3. Step 3: Cross multiply
    375.31x = 518.26 × 235.67
  4. Step 4: Simplify right side
    375.31x = 122,134.56
  5. Step 5: Solve for x
    x = 122,134.56/375.31
  6. Step 6: Final answer
    x = 325.43

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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.