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Finding the Fourth Proportional to 627.29, 865.64 and 351.29

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Solution

The fourth proportional to 627.29, 865.64 and 351.29 is: 484.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.29 : 865.64 = 351.29 : x
  2. Step 2: Convert to fraction form
    627.29/865.64 = 351.29/x
  3. Step 3: Cross multiply
    627.29x = 865.64 × 351.29
  4. Step 4: Simplify right side
    627.29x = 304,090.68
  5. Step 5: Solve for x
    x = 304,090.68/627.29
  6. Step 6: Final answer
    x = 484.77

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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.