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Finding the Fourth Proportional to 108.88, 161.99 and 108.52

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Solution

The fourth proportional to 108.88, 161.99 and 108.52 is: 161.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    108.88 : 161.99 = 108.52 : x
  2. Step 2: Convert to fraction form
    108.88/161.99 = 108.52/x
  3. Step 3: Cross multiply
    108.88x = 161.99 × 108.52
  4. Step 4: Simplify right side
    108.88x = 17,579.15
  5. Step 5: Solve for x
    x = 17,579.15/108.88
  6. Step 6: Final answer
    x = 161.45

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.