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Finding the Fourth Proportional to 551.11, 826.60 and 277.15

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Solution

The fourth proportional to 551.11, 826.60 and 277.15 is: 415.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.11 : 826.60 = 277.15 : x
  2. Step 2: Convert to fraction form
    551.11/826.60 = 277.15/x
  3. Step 3: Cross multiply
    551.11x = 826.60 × 277.15
  4. Step 4: Simplify right side
    551.11x = 229,092.19
  5. Step 5: Solve for x
    x = 229,092.19/551.11
  6. Step 6: Final answer
    x = 415.69

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Double scale
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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.