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Finding the Fourth Proportional to 627.13, 865.47 and 351.13

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Solution

The fourth proportional to 627.13, 865.47 and 351.13 is: 484.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.13 : 865.47 = 351.13 : x
  2. Step 2: Convert to fraction form
    627.13/865.47 = 351.13/x
  3. Step 3: Cross multiply
    627.13x = 865.47 × 351.13
  4. Step 4: Simplify right side
    627.13x = 303,892.48
  5. Step 5: Solve for x
    x = 303,892.48/627.13
  6. Step 6: Final answer
    x = 484.58

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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.