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Finding the Fourth Proportional to 551.86, 827.79 and 205.28

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Solution

The fourth proportional to 551.86, 827.79 and 205.28 is: 307.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.86 : 827.79 = 205.28 : x
  2. Step 2: Convert to fraction form
    551.86/827.79 = 205.28/x
  3. Step 3: Cross multiply
    551.86x = 827.79 × 205.28
  4. Step 4: Simplify right side
    551.86x = 169,932.35
  5. Step 5: Solve for x
    x = 169,932.35/551.86
  6. Step 6: Final answer
    x = 307.93

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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.