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Finding the Fourth Proportional to 634.95, 951.79 and 223.75

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Solution

The fourth proportional to 634.95, 951.79 and 223.75 is: 335.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.95 : 951.79 = 223.75 : x
  2. Step 2: Convert to fraction form
    634.95/951.79 = 223.75/x
  3. Step 3: Cross multiply
    634.95x = 951.79 × 223.75
  4. Step 4: Simplify right side
    634.95x = 212,963.01
  5. Step 5: Solve for x
    x = 212,963.01/634.95
  6. Step 6: Final answer
    x = 335.40

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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.