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Finding the Fourth Proportional to 627.12, 940.95 and 352.80

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Solution

The fourth proportional to 627.12, 940.95 and 352.80 is: 529.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.12 : 940.95 = 352.80 : x
  2. Step 2: Convert to fraction form
    627.12/940.95 = 352.80/x
  3. Step 3: Cross multiply
    627.12x = 940.95 × 352.80
  4. Step 4: Simplify right side
    627.12x = 331,967.16
  5. Step 5: Solve for x
    x = 331,967.16/627.12
  6. Step 6: Final answer
    x = 529.35

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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.