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Finding the Fourth Proportional to 627.17, 864.81 and 440.60

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Solution

The fourth proportional to 627.17, 864.81 and 440.60 is: 607.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.17 : 864.81 = 440.60 : x
  2. Step 2: Convert to fraction form
    627.17/864.81 = 440.60/x
  3. Step 3: Cross multiply
    627.17x = 864.81 × 440.60
  4. Step 4: Simplify right side
    627.17x = 381,030.96
  5. Step 5: Solve for x
    x = 381,030.96/627.17
  6. Step 6: Final answer
    x = 607.55

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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.