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Finding the Fourth Proportional to 548.50, 823.11 and 259.96

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Solution

The fourth proportional to 548.50, 823.11 and 259.96 is: 390.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.50 : 823.11 = 259.96 : x
  2. Step 2: Convert to fraction form
    548.50/823.11 = 259.96/x
  3. Step 3: Cross multiply
    548.50x = 823.11 × 259.96
  4. Step 4: Simplify right side
    548.50x = 213,975.68
  5. Step 5: Solve for x
    x = 213,975.68/548.50
  6. Step 6: Final answer
    x = 390.11

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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.