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Finding the Fourth Proportional to 371.69, 513.14 and 284.52

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Solution

The fourth proportional to 371.69, 513.14 and 284.52 is: 392.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.69 : 513.14 = 284.52 : x
  2. Step 2: Convert to fraction form
    371.69/513.14 = 284.52/x
  3. Step 3: Cross multiply
    371.69x = 513.14 × 284.52
  4. Step 4: Simplify right side
    371.69x = 145,998.59
  5. Step 5: Solve for x
    x = 145,998.59/371.69
  6. Step 6: Final answer
    x = 392.80

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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.