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Finding the Fourth Proportional to 335.31, 500.67 and 279.96

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Solution

The fourth proportional to 335.31, 500.67 and 279.96 is: 418.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.31 : 500.67 = 279.96 : x
  2. Step 2: Convert to fraction form
    335.31/500.67 = 279.96/x
  3. Step 3: Cross multiply
    335.31x = 500.67 × 279.96
  4. Step 4: Simplify right side
    335.31x = 140,167.57
  5. Step 5: Solve for x
    x = 140,167.57/335.31
  6. Step 6: Final answer
    x = 418.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.