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Finding the Fourth Proportional to 627.87, 866.49 and 348.12

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Solution

The fourth proportional to 627.87, 866.49 and 348.12 is: 480.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.87 : 866.49 = 348.12 : x
  2. Step 2: Convert to fraction form
    627.87/866.49 = 348.12/x
  3. Step 3: Cross multiply
    627.87x = 866.49 × 348.12
  4. Step 4: Simplify right side
    627.87x = 301,642.50
  5. Step 5: Solve for x
    x = 301,642.50/627.87
  6. Step 6: Final answer
    x = 480.42

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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.