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Finding the Fourth Proportional to 335.32, 500.81 and 281.26

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Solution

The fourth proportional to 335.32, 500.81 and 281.26 is: 420.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.32 : 500.81 = 281.26 : x
  2. Step 2: Convert to fraction form
    335.32/500.81 = 281.26/x
  3. Step 3: Cross multiply
    335.32x = 500.81 × 281.26
  4. Step 4: Simplify right side
    335.32x = 140,857.82
  5. Step 5: Solve for x
    x = 140,857.82/335.32
  6. Step 6: Final answer
    x = 420.07

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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.