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Finding the Fourth Proportional to 450.39, 674.62 and 376.40

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Solution

The fourth proportional to 450.39, 674.62 and 376.40 is: 563.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.39 : 674.62 = 376.40 : x
  2. Step 2: Convert to fraction form
    450.39/674.62 = 376.40/x
  3. Step 3: Cross multiply
    450.39x = 674.62 × 376.40
  4. Step 4: Simplify right side
    450.39x = 253,922.65
  5. Step 5: Solve for x
    x = 253,922.65/450.39
  6. Step 6: Final answer
    x = 563.78

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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.