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Finding the Fourth Proportional to 489.35, 734.36 and 181.22

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Solution

The fourth proportional to 489.35, 734.36 and 181.22 is: 271.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    489.35 : 734.36 = 181.22 : x
  2. Step 2: Convert to fraction form
    489.35/734.36 = 181.22/x
  3. Step 3: Cross multiply
    489.35x = 734.36 × 181.22
  4. Step 4: Simplify right side
    489.35x = 133,076.14
  5. Step 5: Solve for x
    x = 133,076.14/489.35
  6. Step 6: Final answer
    x = 271.94

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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.