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Finding the Fourth Proportional to 511.49, 766.89 and 203.10

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Solution

The fourth proportional to 511.49, 766.89 and 203.10 is: 304.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.49 : 766.89 = 203.10 : x
  2. Step 2: Convert to fraction form
    511.49/766.89 = 203.10/x
  3. Step 3: Cross multiply
    511.49x = 766.89 × 203.10
  4. Step 4: Simplify right side
    511.49x = 155,755.36
  5. Step 5: Solve for x
    x = 155,755.36/511.49
  6. Step 6: Final answer
    x = 304.52

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Double scale
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Similar ratio
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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.