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Finding the Fourth Proportional to 108.02, 149.14 and 102.25

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Solution

The fourth proportional to 108.02, 149.14 and 102.25 is: 141.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    108.02 : 149.14 = 102.25 : x
  2. Step 2: Convert to fraction form
    108.02/149.14 = 102.25/x
  3. Step 3: Cross multiply
    108.02x = 149.14 × 102.25
  4. Step 4: Simplify right side
    108.02x = 15,249.04
  5. Step 5: Solve for x
    x = 15,249.04/108.02
  6. Step 6: Final answer
    x = 141.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.