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Finding the Fourth Proportional to 551.31, 825.34 and 527.55

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Solution

The fourth proportional to 551.31, 825.34 and 527.55 is: 789.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.31 : 825.34 = 527.55 : x
  2. Step 2: Convert to fraction form
    551.31/825.34 = 527.55/x
  3. Step 3: Cross multiply
    551.31x = 825.34 × 527.55
  4. Step 4: Simplify right side
    551.31x = 435,408.12
  5. Step 5: Solve for x
    x = 435,408.12/551.31
  6. Step 6: Final answer
    x = 789.77

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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.