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Finding the Fourth Proportional to 371.61, 512.83 and 205.81

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Solution

The fourth proportional to 371.61, 512.83 and 205.81 is: 284.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.61 : 512.83 = 205.81 : x
  2. Step 2: Convert to fraction form
    371.61/512.83 = 205.81/x
  3. Step 3: Cross multiply
    371.61x = 512.83 × 205.81
  4. Step 4: Simplify right side
    371.61x = 105,545.54
  5. Step 5: Solve for x
    x = 105,545.54/371.61
  6. Step 6: Final answer
    x = 284.02

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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.