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Finding the Fourth Proportional to 511.44, 766.70 and 203.14

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Solution

The fourth proportional to 511.44, 766.70 and 203.14 is: 304.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.44 : 766.70 = 203.14 : x
  2. Step 2: Convert to fraction form
    511.44/766.70 = 203.14/x
  3. Step 3: Cross multiply
    511.44x = 766.70 × 203.14
  4. Step 4: Simplify right side
    511.44x = 155,747.44
  5. Step 5: Solve for x
    x = 155,747.44/511.44
  6. Step 6: Final answer
    x = 304.53

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Double scale
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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.