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Finding the Fourth Proportional to 303.87, 455.89 and 121.27

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Solution

The fourth proportional to 303.87, 455.89 and 121.27 is: 181.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.87 : 455.89 = 121.27 : x
  2. Step 2: Convert to fraction form
    303.87/455.89 = 121.27/x
  3. Step 3: Cross multiply
    303.87x = 455.89 × 121.27
  4. Step 4: Simplify right side
    303.87x = 55,285.17
  5. Step 5: Solve for x
    x = 55,285.17/303.87
  6. Step 6: Final answer
    x = 181.94

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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.