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Finding the Fourth Proportional to 445.69, 668.43 and 250.77

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Solution

The fourth proportional to 445.69, 668.43 and 250.77 is: 376.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.69 : 668.43 = 250.77 : x
  2. Step 2: Convert to fraction form
    445.69/668.43 = 250.77/x
  3. Step 3: Cross multiply
    445.69x = 668.43 × 250.77
  4. Step 4: Simplify right side
    445.69x = 167,623.86
  5. Step 5: Solve for x
    x = 167,623.86/445.69
  6. Step 6: Final answer
    x = 376.10

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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.