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Finding the Fourth Proportional to 121.27, 181.83 and 60.28

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Solution

The fourth proportional to 121.27, 181.83 and 60.28 is: 90.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    121.27 : 181.83 = 60.28 : x
  2. Step 2: Convert to fraction form
    121.27/181.83 = 60.28/x
  3. Step 3: Cross multiply
    121.27x = 181.83 × 60.28
  4. Step 4: Simplify right side
    121.27x = 10,960.71
  5. Step 5: Solve for x
    x = 10,960.71/121.27
  6. Step 6: Final answer
    x = 90.38

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.