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Finding the Fourth Proportional to 334.44, 458.19 and 321.48

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Solution

The fourth proportional to 334.44, 458.19 and 321.48 is: 440.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    334.44 : 458.19 = 321.48 : x
  2. Step 2: Convert to fraction form
    334.44/458.19 = 321.48/x
  3. Step 3: Cross multiply
    334.44x = 458.19 × 321.48
  4. Step 4: Simplify right side
    334.44x = 147,298.92
  5. Step 5: Solve for x
    x = 147,298.92/334.44
  6. Step 6: Final answer
    x = 440.43

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.