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Finding the Fourth Proportional to 569.43, 789.10 and 558.49

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Solution

The fourth proportional to 569.43, 789.10 and 558.49 is: 773.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.43 : 789.10 = 558.49 : x
  2. Step 2: Convert to fraction form
    569.43/789.10 = 558.49/x
  3. Step 3: Cross multiply
    569.43x = 789.10 × 558.49
  4. Step 4: Simplify right side
    569.43x = 440,704.46
  5. Step 5: Solve for x
    x = 440,704.46/569.43
  6. Step 6: Final answer
    x = 773.94

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.