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Finding the Fourth Proportional to 303.69, 455.43 and 121.04

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Solution

The fourth proportional to 303.69, 455.43 and 121.04 is: 181.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.69 : 455.43 = 121.04 : x
  2. Step 2: Convert to fraction form
    303.69/455.43 = 121.04/x
  3. Step 3: Cross multiply
    303.69x = 455.43 × 121.04
  4. Step 4: Simplify right side
    303.69x = 55,122.97
  5. Step 5: Solve for x
    x = 55,122.97/303.69
  6. Step 6: Final answer
    x = 181.51

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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.