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Finding the Fourth Proportional to 512.59, 769.05 and 204.36

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Solution

The fourth proportional to 512.59, 769.05 and 204.36 is: 306.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    512.59 : 769.05 = 204.36 : x
  2. Step 2: Convert to fraction form
    512.59/769.05 = 204.36/x
  3. Step 3: Cross multiply
    512.59x = 769.05 × 204.36
  4. Step 4: Simplify right side
    512.59x = 157,159.21
  5. Step 5: Solve for x
    x = 157,159.21/512.59
  6. Step 6: Final answer
    x = 306.60

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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.