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Finding the Fourth Proportional to 303.68, 455.43 and 111.32

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Solution

The fourth proportional to 303.68, 455.43 and 111.32 is: 166.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.68 : 455.43 = 111.32 : x
  2. Step 2: Convert to fraction form
    303.68/455.43 = 111.32/x
  3. Step 3: Cross multiply
    303.68x = 455.43 × 111.32
  4. Step 4: Simplify right side
    303.68x = 50,698.47
  5. Step 5: Solve for x
    x = 50,698.47/303.68
  6. Step 6: Final answer
    x = 166.95

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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.