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Finding the Fourth Proportional to 108.23, 162.25 and 54.06

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Solution

The fourth proportional to 108.23, 162.25 and 54.06 is: 81.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    108.23 : 162.25 = 54.06 : x
  2. Step 2: Convert to fraction form
    108.23/162.25 = 54.06/x
  3. Step 3: Cross multiply
    108.23x = 162.25 × 54.06
  4. Step 4: Simplify right side
    108.23x = 8,771.24
  5. Step 5: Solve for x
    x = 8,771.24/108.23
  6. Step 6: Final answer
    x = 81.04

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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.