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Finding the Fourth Proportional to 441.35, 661.86 and 167.51

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Solution

The fourth proportional to 441.35, 661.86 and 167.51 is: 251.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.35 : 661.86 = 167.51 : x
  2. Step 2: Convert to fraction form
    441.35/661.86 = 167.51/x
  3. Step 3: Cross multiply
    441.35x = 661.86 × 167.51
  4. Step 4: Simplify right side
    441.35x = 110,868.17
  5. Step 5: Solve for x
    x = 110,868.17/441.35
  6. Step 6: Final answer
    x = 251.21

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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.