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Finding the Fourth Proportional to 110.08, 164.90 and 66.76

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Solution

The fourth proportional to 110.08, 164.90 and 66.76 is: 100.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    110.08 : 164.90 = 66.76 : x
  2. Step 2: Convert to fraction form
    110.08/164.90 = 66.76/x
  3. Step 3: Cross multiply
    110.08x = 164.90 × 66.76
  4. Step 4: Simplify right side
    110.08x = 11,008.72
  5. Step 5: Solve for x
    x = 11,008.72/110.08
  6. Step 6: Final answer
    x = 100.01

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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.