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Finding the Fourth Proportional to 451.39, 674.45 and 333.76

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Solution

The fourth proportional to 451.39, 674.45 and 333.76 is: 498.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.39 : 674.45 = 333.76 : x
  2. Step 2: Convert to fraction form
    451.39/674.45 = 333.76/x
  3. Step 3: Cross multiply
    451.39x = 674.45 × 333.76
  4. Step 4: Simplify right side
    451.39x = 225,104.43
  5. Step 5: Solve for x
    x = 225,104.43/451.39
  6. Step 6: Final answer
    x = 498.69

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.