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Finding the Fourth Proportional to 627.94, 866.56 and 351.94

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Solution

The fourth proportional to 627.94, 866.56 and 351.94 is: 485.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.94 : 866.56 = 351.94 : x
  2. Step 2: Convert to fraction form
    627.94/866.56 = 351.94/x
  3. Step 3: Cross multiply
    627.94x = 866.56 × 351.94
  4. Step 4: Simplify right side
    627.94x = 304,975.37
  5. Step 5: Solve for x
    x = 304,975.37/627.94
  6. Step 6: Final answer
    x = 485.68

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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.