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Finding the Fourth Proportional to 216.20, 323.48 and 164.66

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Solution

The fourth proportional to 216.20, 323.48 and 164.66 is: 246.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    216.20 : 323.48 = 164.66 : x
  2. Step 2: Convert to fraction form
    216.20/323.48 = 164.66/x
  3. Step 3: Cross multiply
    216.20x = 323.48 × 164.66
  4. Step 4: Simplify right side
    216.20x = 53,264.22
  5. Step 5: Solve for x
    x = 53,264.22/216.20
  6. Step 6: Final answer
    x = 246.37

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.