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Finding the Fourth Proportional to 627.95, 866.57 and 439.17

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Solution

The fourth proportional to 627.95, 866.57 and 439.17 is: 606.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.95 : 866.57 = 439.17 : x
  2. Step 2: Convert to fraction form
    627.95/866.57 = 439.17/x
  3. Step 3: Cross multiply
    627.95x = 866.57 × 439.17
  4. Step 4: Simplify right side
    627.95x = 380,574.68
  5. Step 5: Solve for x
    x = 380,574.68/627.95
  6. Step 6: Final answer
    x = 606.06

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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.