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Finding the Fourth Proportional to 349.86, 483 and 231.86

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Solution

The fourth proportional to 349.86, 483 and 231.86 is: 320.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.86 : 483 = 231.86 : x
  2. Step 2: Convert to fraction form
    349.86/483 = 231.86/x
  3. Step 3: Cross multiply
    349.86x = 483 × 231.86
  4. Step 4: Simplify right side
    349.86x = 111,988.38
  5. Step 5: Solve for x
    x = 111,988.38/349.86
  6. Step 6: Final answer
    x = 320.09

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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.