Home / 627.20-865.23-406.34

Finding the Fourth Proportional to 627.20, 865.23 and 406.34

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Solution

The fourth proportional to 627.20, 865.23 and 406.34 is: 560.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.20 : 865.23 = 406.34 : x
  2. Step 2: Convert to fraction form
    627.20/865.23 = 406.34/x
  3. Step 3: Cross multiply
    627.20x = 865.23 × 406.34
  4. Step 4: Simplify right side
    627.20x = 351,577.56
  5. Step 5: Solve for x
    x = 351,577.56/627.20
  6. Step 6: Final answer
    x = 560.55

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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.