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Finding the Fourth Proportional to 528.14, 789.04 and 517.34

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Solution

The fourth proportional to 528.14, 789.04 and 517.34 is: 772.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.14 : 789.04 = 517.34 : x
  2. Step 2: Convert to fraction form
    528.14/789.04 = 517.34/x
  3. Step 3: Cross multiply
    528.14x = 789.04 × 517.34
  4. Step 4: Simplify right side
    528.14x = 408,201.95
  5. Step 5: Solve for x
    x = 408,201.95/528.14
  6. Step 6: Final answer
    x = 772.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.