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Finding the Fourth Proportional to 551.32, 826.44 and 308.05

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Solution

The fourth proportional to 551.32, 826.44 and 308.05 is: 461.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.32 : 826.44 = 308.05 : x
  2. Step 2: Convert to fraction form
    551.32/826.44 = 308.05/x
  3. Step 3: Cross multiply
    551.32x = 826.44 × 308.05
  4. Step 4: Simplify right side
    551.32x = 254,584.84
  5. Step 5: Solve for x
    x = 254,584.84/551.32
  6. Step 6: Final answer
    x = 461.77

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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.