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Finding the Fourth Proportional to 335.56, 460.32 and 321.38

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Solution

The fourth proportional to 335.56, 460.32 and 321.38 is: 440.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.56 : 460.32 = 321.38 : x
  2. Step 2: Convert to fraction form
    335.56/460.32 = 321.38/x
  3. Step 3: Cross multiply
    335.56x = 460.32 × 321.38
  4. Step 4: Simplify right side
    335.56x = 147,938.45
  5. Step 5: Solve for x
    x = 147,938.45/335.56
  6. Step 6: Final answer
    x = 440.87

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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.