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Finding the Fourth Proportional to 627.94, 942.34 and 383.72

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Solution

The fourth proportional to 627.94, 942.34 and 383.72 is: 575.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.94 : 942.34 = 383.72 : x
  2. Step 2: Convert to fraction form
    627.94/942.34 = 383.72/x
  3. Step 3: Cross multiply
    627.94x = 942.34 × 383.72
  4. Step 4: Simplify right side
    627.94x = 361,594.70
  5. Step 5: Solve for x
    x = 361,594.70/627.94
  6. Step 6: Final answer
    x = 575.84

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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.