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Finding the Fourth Proportional to 611.42, 843.82 and 362.81

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Solution

The fourth proportional to 611.42, 843.82 and 362.81 is: 500.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.42 : 843.82 = 362.81 : x
  2. Step 2: Convert to fraction form
    611.42/843.82 = 362.81/x
  3. Step 3: Cross multiply
    611.42x = 843.82 × 362.81
  4. Step 4: Simplify right side
    611.42x = 306,147.54
  5. Step 5: Solve for x
    x = 306,147.54/611.42
  6. Step 6: Final answer
    x = 500.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.