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Finding the Fourth Proportional to 349.72, 481.48 and 303.69

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Solution

The fourth proportional to 349.72, 481.48 and 303.69 is: 418.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.72 : 481.48 = 303.69 : x
  2. Step 2: Convert to fraction form
    349.72/481.48 = 303.69/x
  3. Step 3: Cross multiply
    349.72x = 481.48 × 303.69
  4. Step 4: Simplify right side
    349.72x = 146,220.66
  5. Step 5: Solve for x
    x = 146,220.66/349.72
  6. Step 6: Final answer
    x = 418.11

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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.