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Finding the Fourth Proportional to 445.03, 667.61 and 262.51

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Solution

The fourth proportional to 445.03, 667.61 and 262.51 is: 393.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.03 : 667.61 = 262.51 : x
  2. Step 2: Convert to fraction form
    445.03/667.61 = 262.51/x
  3. Step 3: Cross multiply
    445.03x = 667.61 × 262.51
  4. Step 4: Simplify right side
    445.03x = 175,249.65
  5. Step 5: Solve for x
    x = 175,249.65/445.03
  6. Step 6: Final answer
    x = 393.80

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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.