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Finding the Fourth Proportional to 349, 481.63 and 201.65

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Solution

The fourth proportional to 349, 481.63 and 201.65 is: 278.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    349 : 481.63 = 201.65 : x
  2. Step 2: Convert to fraction form
    349/481.63 = 201.65/x
  3. Step 3: Cross multiply
    349x = 481.63 × 201.65
  4. Step 4: Simplify right side
    349x = 97,120.69
  5. Step 5: Solve for x
    x = 97,120.69/349
  6. Step 6: Final answer
    x = 278.28

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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.