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Finding the Fourth Proportional to 627.40, 935.97 and 619.19

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Solution

The fourth proportional to 627.40, 935.97 and 619.19 is: 923.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.40 : 935.97 = 619.19 : x
  2. Step 2: Convert to fraction form
    627.40/935.97 = 619.19/x
  3. Step 3: Cross multiply
    627.40x = 935.97 × 619.19
  4. Step 4: Simplify right side
    627.40x = 579,545.91
  5. Step 5: Solve for x
    x = 579,545.91/627.40
  6. Step 6: Final answer
    x = 923.73

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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.