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Finding the Fourth Proportional to 627.84, 858.99 and 625.44

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Solution

The fourth proportional to 627.84, 858.99 and 625.44 is: 855.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.84 : 858.99 = 625.44 : x
  2. Step 2: Convert to fraction form
    627.84/858.99 = 625.44/x
  3. Step 3: Cross multiply
    627.84x = 858.99 × 625.44
  4. Step 4: Simplify right side
    627.84x = 537,246.71
  5. Step 5: Solve for x
    x = 537,246.71/627.84
  6. Step 6: Final answer
    x = 855.71

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.