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Finding the Fourth Proportional to 349.51, 481.98 and 231.39

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Solution

The fourth proportional to 349.51, 481.98 and 231.39 is: 319.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.51 : 481.98 = 231.39 : x
  2. Step 2: Convert to fraction form
    349.51/481.98 = 231.39/x
  3. Step 3: Cross multiply
    349.51x = 481.98 × 231.39
  4. Step 4: Simplify right side
    349.51x = 111,525.35
  5. Step 5: Solve for x
    x = 111,525.35/349.51
  6. Step 6: Final answer
    x = 319.09

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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.