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Finding the Fourth Proportional to 550.86, 826.29 and 485.25

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Solution

The fourth proportional to 550.86, 826.29 and 485.25 is: 727.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.86 : 826.29 = 485.25 : x
  2. Step 2: Convert to fraction form
    550.86/826.29 = 485.25/x
  3. Step 3: Cross multiply
    550.86x = 826.29 × 485.25
  4. Step 4: Simplify right side
    550.86x = 400,956.95
  5. Step 5: Solve for x
    x = 400,956.95/550.86
  6. Step 6: Final answer
    x = 727.87

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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.