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Finding the Fourth Proportional to 627.21, 940.95 and 444.15

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Solution

The fourth proportional to 627.21, 940.95 and 444.15 is: 666.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.21 : 940.95 = 444.15 : x
  2. Step 2: Convert to fraction form
    627.21/940.95 = 444.15/x
  3. Step 3: Cross multiply
    627.21x = 940.95 × 444.15
  4. Step 4: Simplify right side
    627.21x = 417,922.94
  5. Step 5: Solve for x
    x = 417,922.94/627.21
  6. Step 6: Final answer
    x = 666.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.