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Finding the Fourth Proportional to 108.64, 149.33 and 97.48

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Solution

The fourth proportional to 108.64, 149.33 and 97.48 is: 133.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    108.64 : 149.33 = 97.48 : x
  2. Step 2: Convert to fraction form
    108.64/149.33 = 97.48/x
  3. Step 3: Cross multiply
    108.64x = 149.33 × 97.48
  4. Step 4: Simplify right side
    108.64x = 14,556.69
  5. Step 5: Solve for x
    x = 14,556.69/108.64
  6. Step 6: Final answer
    x = 133.99

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.