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Finding the Fourth Proportional to 218.35, 327.64 and 167.32

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Solution

The fourth proportional to 218.35, 327.64 and 167.32 is: 251.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    218.35 : 327.64 = 167.32 : x
  2. Step 2: Convert to fraction form
    218.35/327.64 = 167.32/x
  3. Step 3: Cross multiply
    218.35x = 327.64 × 167.32
  4. Step 4: Simplify right side
    218.35x = 54,820.72
  5. Step 5: Solve for x
    x = 54,820.72/218.35
  6. Step 6: Final answer
    x = 251.07

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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.