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Finding the Fourth Proportional to 481.05, 664.28 and 304.34

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Solution

The fourth proportional to 481.05, 664.28 and 304.34 is: 420.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.05 : 664.28 = 304.34 : x
  2. Step 2: Convert to fraction form
    481.05/664.28 = 304.34/x
  3. Step 3: Cross multiply
    481.05x = 664.28 × 304.34
  4. Step 4: Simplify right side
    481.05x = 202,162.13
  5. Step 5: Solve for x
    x = 202,162.13/481.05
  6. Step 6: Final answer
    x = 420.25

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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.