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Finding the Fourth Proportional to 551.22, 826.66 and 276.94

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Solution

The fourth proportional to 551.22, 826.66 and 276.94 is: 415.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.22 : 826.66 = 276.94 : x
  2. Step 2: Convert to fraction form
    551.22/826.66 = 276.94/x
  3. Step 3: Cross multiply
    551.22x = 826.66 × 276.94
  4. Step 4: Simplify right side
    551.22x = 228,935.22
  5. Step 5: Solve for x
    x = 228,935.22/551.22
  6. Step 6: Final answer
    x = 415.32

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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.