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Finding the Fourth Proportional to 104.05, 143.50 and 69.08

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Solution

The fourth proportional to 104.05, 143.50 and 69.08 is: 95.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    104.05 : 143.50 = 69.08 : x
  2. Step 2: Convert to fraction form
    104.05/143.50 = 69.08/x
  3. Step 3: Cross multiply
    104.05x = 143.50 × 69.08
  4. Step 4: Simplify right side
    104.05x = 9,912.98
  5. Step 5: Solve for x
    x = 9,912.98/104.05
  6. Step 6: Final answer
    x = 95.27

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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.