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Finding the Fourth Proportional to 121.29, 181.96 and 44.26

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Solution

The fourth proportional to 121.29, 181.96 and 44.26 is: 66.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121.29 : 181.96 = 44.26 : x
  2. Step 2: Convert to fraction form
    121.29/181.96 = 44.26/x
  3. Step 3: Cross multiply
    121.29x = 181.96 × 44.26
  4. Step 4: Simplify right side
    121.29x = 8,053.55
  5. Step 5: Solve for x
    x = 8,053.55/121.29
  6. Step 6: Final answer
    x = 66.40

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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.