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Finding the Fourth Proportional to 349.17, 481.80 and 199.77

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Solution

The fourth proportional to 349.17, 481.80 and 199.77 is: 275.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.17 : 481.80 = 199.77 : x
  2. Step 2: Convert to fraction form
    349.17/481.80 = 199.77/x
  3. Step 3: Cross multiply
    349.17x = 481.80 × 199.77
  4. Step 4: Simplify right side
    349.17x = 96,249.19
  5. Step 5: Solve for x
    x = 96,249.19/349.17
  6. Step 6: Final answer
    x = 275.65

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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.