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Finding the Fourth Proportional to 634.40, 951.64 and 249.60

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Solution

The fourth proportional to 634.40, 951.64 and 249.60 is: 374.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.40 : 951.64 = 249.60 : x
  2. Step 2: Convert to fraction form
    634.40/951.64 = 249.60/x
  3. Step 3: Cross multiply
    634.40x = 951.64 × 249.60
  4. Step 4: Simplify right side
    634.40x = 237,529.34
  5. Step 5: Solve for x
    x = 237,529.34/634.40
  6. Step 6: Final answer
    x = 374.42

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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.