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Finding the Fourth Proportional to 572.57, 789.43 and 467.55

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Solution

The fourth proportional to 572.57, 789.43 and 467.55 is: 644.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.57 : 789.43 = 467.55 : x
  2. Step 2: Convert to fraction form
    572.57/789.43 = 467.55/x
  3. Step 3: Cross multiply
    572.57x = 789.43 × 467.55
  4. Step 4: Simplify right side
    572.57x = 369,098.00
  5. Step 5: Solve for x
    x = 369,098.00/572.57
  6. Step 6: Final answer
    x = 644.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.