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Finding the Fourth Proportional to 164.28, 246.36 and 92.16

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Solution

The fourth proportional to 164.28, 246.36 and 92.16 is: 138.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.28 : 246.36 = 92.16 : x
  2. Step 2: Convert to fraction form
    164.28/246.36 = 92.16/x
  3. Step 3: Cross multiply
    164.28x = 246.36 × 92.16
  4. Step 4: Simplify right side
    164.28x = 22,704.54
  5. Step 5: Solve for x
    x = 22,704.54/164.28
  6. Step 6: Final answer
    x = 138.21

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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.