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Finding the Fourth Proportional to 303.63, 455.44 and 111.25

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Solution

The fourth proportional to 303.63, 455.44 and 111.25 is: 166.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.63 : 455.44 = 111.25 : x
  2. Step 2: Convert to fraction form
    303.63/455.44 = 111.25/x
  3. Step 3: Cross multiply
    303.63x = 455.44 × 111.25
  4. Step 4: Simplify right side
    303.63x = 50,667.70
  5. Step 5: Solve for x
    x = 50,667.70/303.63
  6. Step 6: Final answer
    x = 166.87

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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.