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Finding the Fourth Proportional to 335.72, 503.82 and 281.64

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Solution

The fourth proportional to 335.72, 503.82 and 281.64 is: 422.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.72 : 503.82 = 281.64 : x
  2. Step 2: Convert to fraction form
    335.72/503.82 = 281.64/x
  3. Step 3: Cross multiply
    335.72x = 503.82 × 281.64
  4. Step 4: Simplify right side
    335.72x = 141,895.86
  5. Step 5: Solve for x
    x = 141,895.86/335.72
  6. Step 6: Final answer
    x = 422.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.