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Finding the Fourth Proportional to 489.18, 733.90 and 164.56

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Solution

The fourth proportional to 489.18, 733.90 and 164.56 is: 246.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    489.18 : 733.90 = 164.56 : x
  2. Step 2: Convert to fraction form
    489.18/733.90 = 164.56/x
  3. Step 3: Cross multiply
    489.18x = 733.90 × 164.56
  4. Step 4: Simplify right side
    489.18x = 120,770.58
  5. Step 5: Solve for x
    x = 120,770.58/489.18
  6. Step 6: Final answer
    x = 246.88

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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.