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Finding the Fourth Proportional to 627.25, 865.61 and 351.25

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Solution

The fourth proportional to 627.25, 865.61 and 351.25 is: 484.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.25 : 865.61 = 351.25 : x
  2. Step 2: Convert to fraction form
    627.25/865.61 = 351.25/x
  3. Step 3: Cross multiply
    627.25x = 865.61 × 351.25
  4. Step 4: Simplify right side
    627.25x = 304,045.51
  5. Step 5: Solve for x
    x = 304,045.51/627.25
  6. Step 6: Final answer
    x = 484.73

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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.