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Finding the Fourth Proportional to 512.33, 768.50 and 127.58

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Solution

The fourth proportional to 512.33, 768.50 and 127.58 is: 191.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    512.33 : 768.50 = 127.58 : x
  2. Step 2: Convert to fraction form
    512.33/768.50 = 127.58/x
  3. Step 3: Cross multiply
    512.33x = 768.50 × 127.58
  4. Step 4: Simplify right side
    512.33x = 98,046.83
  5. Step 5: Solve for x
    x = 98,046.83/512.33
  6. Step 6: Final answer
    x = 191.37

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Double scale
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Similar ratio
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1.5x scale

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.