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Finding the Fourth Proportional to 627.94, 939.48 and 383.32

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Solution

The fourth proportional to 627.94, 939.48 and 383.32 is: 573.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.94 : 939.48 = 383.32 : x
  2. Step 2: Convert to fraction form
    627.94/939.48 = 383.32/x
  3. Step 3: Cross multiply
    627.94x = 939.48 × 383.32
  4. Step 4: Simplify right side
    627.94x = 360,121.47
  5. Step 5: Solve for x
    x = 360,121.47/627.94
  6. Step 6: Final answer
    x = 573.50

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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.