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Finding the Fourth Proportional to 303.84, 455.28 and 166.68

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Solution

The fourth proportional to 303.84, 455.28 and 166.68 is: 249.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.84 : 455.28 = 166.68 : x
  2. Step 2: Convert to fraction form
    303.84/455.28 = 166.68/x
  3. Step 3: Cross multiply
    303.84x = 455.28 × 166.68
  4. Step 4: Simplify right side
    303.84x = 75,886.07
  5. Step 5: Solve for x
    x = 75,886.07/303.84
  6. Step 6: Final answer
    x = 249.76

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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.