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Finding the Fourth Proportional to 627.88, 941.94 and 319.60

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Solution

The fourth proportional to 627.88, 941.94 and 319.60 is: 479.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.88 : 941.94 = 319.60 : x
  2. Step 2: Convert to fraction form
    627.88/941.94 = 319.60/x
  3. Step 3: Cross multiply
    627.88x = 941.94 × 319.60
  4. Step 4: Simplify right side
    627.88x = 301,044.02
  5. Step 5: Solve for x
    x = 301,044.02/627.88
  6. Step 6: Final answer
    x = 479.46

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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.