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Finding the Fourth Proportional to 627.68, 944.82 and 572.31

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Solution

The fourth proportional to 627.68, 944.82 and 572.31 is: 861.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.68 : 944.82 = 572.31 : x
  2. Step 2: Convert to fraction form
    627.68/944.82 = 572.31/x
  3. Step 3: Cross multiply
    627.68x = 944.82 × 572.31
  4. Step 4: Simplify right side
    627.68x = 540,729.93
  5. Step 5: Solve for x
    x = 540,729.93/627.68
  6. Step 6: Final answer
    x = 861.47

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.