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Finding the Fourth Proportional to 441.26, 661.81 and 167.30

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Solution

The fourth proportional to 441.26, 661.81 and 167.30 is: 250.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.26 : 661.81 = 167.30 : x
  2. Step 2: Convert to fraction form
    441.26/661.81 = 167.30/x
  3. Step 3: Cross multiply
    441.26x = 661.81 × 167.30
  4. Step 4: Simplify right side
    441.26x = 110,720.81
  5. Step 5: Solve for x
    x = 110,720.81/441.26
  6. Step 6: Final answer
    x = 250.92

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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.