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Finding the Fourth Proportional to 104.80, 157.22 and 50.68

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Solution

The fourth proportional to 104.80, 157.22 and 50.68 is: 76.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    104.80 : 157.22 = 50.68 : x
  2. Step 2: Convert to fraction form
    104.80/157.22 = 50.68/x
  3. Step 3: Cross multiply
    104.80x = 157.22 × 50.68
  4. Step 4: Simplify right side
    104.80x = 7,967.91
  5. Step 5: Solve for x
    x = 7,967.91/104.80
  6. Step 6: Final answer
    x = 76.03

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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.