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Finding the Fourth Proportional to 375.28, 518.14 and 251.08

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Solution

The fourth proportional to 375.28, 518.14 and 251.08 is: 346.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.28 : 518.14 = 251.08 : x
  2. Step 2: Convert to fraction form
    375.28/518.14 = 251.08/x
  3. Step 3: Cross multiply
    375.28x = 518.14 × 251.08
  4. Step 4: Simplify right side
    375.28x = 130,094.59
  5. Step 5: Solve for x
    x = 130,094.59/375.28
  6. Step 6: Final answer
    x = 346.66

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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.