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Finding the Fourth Proportional to 218.39, 327.18 and 170.06

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Solution

The fourth proportional to 218.39, 327.18 and 170.06 is: 254.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    218.39 : 327.18 = 170.06 : x
  2. Step 2: Convert to fraction form
    218.39/327.18 = 170.06/x
  3. Step 3: Cross multiply
    218.39x = 327.18 × 170.06
  4. Step 4: Simplify right side
    218.39x = 55,640.23
  5. Step 5: Solve for x
    x = 55,640.23/218.39
  6. Step 6: Final answer
    x = 254.77

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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.