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Finding the Fourth Proportional to 627.90, 941.28 and 349.86

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Solution

The fourth proportional to 627.90, 941.28 and 349.86 is: 524.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.90 : 941.28 = 349.86 : x
  2. Step 2: Convert to fraction form
    627.90/941.28 = 349.86/x
  3. Step 3: Cross multiply
    627.90x = 941.28 × 349.86
  4. Step 4: Simplify right side
    627.90x = 329,316.22
  5. Step 5: Solve for x
    x = 329,316.22/627.90
  6. Step 6: Final answer
    x = 524.47

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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.