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Finding the Fourth Proportional to 551.27, 826.91 and 336.21

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Solution

The fourth proportional to 551.27, 826.91 and 336.21 is: 504.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.27 : 826.91 = 336.21 : x
  2. Step 2: Convert to fraction form
    551.27/826.91 = 336.21/x
  3. Step 3: Cross multiply
    551.27x = 826.91 × 336.21
  4. Step 4: Simplify right side
    551.27x = 278,013.73
  5. Step 5: Solve for x
    x = 278,013.73/551.27
  6. Step 6: Final answer
    x = 504.32

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Double scale
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Similar ratio
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1.5x scale

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.