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Finding the Fourth Proportional to 164.14, 246.22 and 67.90

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Solution

The fourth proportional to 164.14, 246.22 and 67.90 is: 101.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.14 : 246.22 = 67.90 : x
  2. Step 2: Convert to fraction form
    164.14/246.22 = 67.90/x
  3. Step 3: Cross multiply
    164.14x = 246.22 × 67.90
  4. Step 4: Simplify right side
    164.14x = 16,718.34
  5. Step 5: Solve for x
    x = 16,718.34/164.14
  6. Step 6: Final answer
    x = 101.85

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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.