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Finding the Fourth Proportional to 375.96, 518.97 and 251.58

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Solution

The fourth proportional to 375.96, 518.97 and 251.58 is: 347.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.96 : 518.97 = 251.58 : x
  2. Step 2: Convert to fraction form
    375.96/518.97 = 251.58/x
  3. Step 3: Cross multiply
    375.96x = 518.97 × 251.58
  4. Step 4: Simplify right side
    375.96x = 130,562.47
  5. Step 5: Solve for x
    x = 130,562.47/375.96
  6. Step 6: Final answer
    x = 347.28

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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.