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Finding the Fourth Proportional to 634.98, 951.64 and 489.99

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Solution

The fourth proportional to 634.98, 951.64 and 489.99 is: 734.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.98 : 951.64 = 489.99 : x
  2. Step 2: Convert to fraction form
    634.98/951.64 = 489.99/x
  3. Step 3: Cross multiply
    634.98x = 951.64 × 489.99
  4. Step 4: Simplify right side
    634.98x = 466,294.08
  5. Step 5: Solve for x
    x = 466,294.08/634.98
  6. Step 6: Final answer
    x = 734.34

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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.