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Finding the Fourth Proportional to 349.77, 481.71 and 251.36

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Solution

The fourth proportional to 349.77, 481.71 and 251.36 is: 346.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.77 : 481.71 = 251.36 : x
  2. Step 2: Convert to fraction form
    349.77/481.71 = 251.36/x
  3. Step 3: Cross multiply
    349.77x = 481.71 × 251.36
  4. Step 4: Simplify right side
    349.77x = 121,082.63
  5. Step 5: Solve for x
    x = 121,082.63/349.77
  6. Step 6: Final answer
    x = 346.18

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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.