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Finding the Fourth Proportional to 511.86, 767.79 and 223.14

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Solution

The fourth proportional to 511.86, 767.79 and 223.14 is: 334.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.86 : 767.79 = 223.14 : x
  2. Step 2: Convert to fraction form
    511.86/767.79 = 223.14/x
  3. Step 3: Cross multiply
    511.86x = 767.79 × 223.14
  4. Step 4: Simplify right side
    511.86x = 171,324.66
  5. Step 5: Solve for x
    x = 171,324.66/511.86
  6. Step 6: Final answer
    x = 334.71

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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.