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Finding the Fourth Proportional to 331.48, 460.03 and 318.28

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Solution

The fourth proportional to 331.48, 460.03 and 318.28 is: 441.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.48 : 460.03 = 318.28 : x
  2. Step 2: Convert to fraction form
    331.48/460.03 = 318.28/x
  3. Step 3: Cross multiply
    331.48x = 460.03 × 318.28
  4. Step 4: Simplify right side
    331.48x = 146,418.35
  5. Step 5: Solve for x
    x = 146,418.35/331.48
  6. Step 6: Final answer
    x = 441.71

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.