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Finding the Fourth Proportional to 489.85, 734.29 and 197.26

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Solution

The fourth proportional to 489.85, 734.29 and 197.26 is: 295.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    489.85 : 734.29 = 197.26 : x
  2. Step 2: Convert to fraction form
    489.85/734.29 = 197.26/x
  3. Step 3: Cross multiply
    489.85x = 734.29 × 197.26
  4. Step 4: Simplify right side
    489.85x = 144,843.72
  5. Step 5: Solve for x
    x = 144,843.72/489.85
  6. Step 6: Final answer
    x = 295.69

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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.