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Finding the Fourth Proportional to 371.58, 512.76 and 205.79

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Solution

The fourth proportional to 371.58, 512.76 and 205.79 is: 283.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.58 : 512.76 = 205.79 : x
  2. Step 2: Convert to fraction form
    371.58/512.76 = 205.79/x
  3. Step 3: Cross multiply
    371.58x = 512.76 × 205.79
  4. Step 4: Simplify right side
    371.58x = 105,520.88
  5. Step 5: Solve for x
    x = 105,520.88/371.58
  6. Step 6: Final answer
    x = 283.98

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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.