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Finding the Fourth Proportional to 375.36, 517.56 and 251

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Solution

The fourth proportional to 375.36, 517.56 and 251 is: 346.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.36 : 517.56 = 251 : x
  2. Step 2: Convert to fraction form
    375.36/517.56 = 251/x
  3. Step 3: Cross multiply
    375.36x = 517.56 × 251
  4. Step 4: Simplify right side
    375.36x = 129,907.56
  5. Step 5: Solve for x
    x = 129,907.56/375.36
  6. Step 6: Final answer
    x = 346.09

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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.