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Finding the Fourth Proportional to 104.60, 157.20 and 96.56

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Solution

The fourth proportional to 104.60, 157.20 and 96.56 is: 145.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    104.60 : 157.20 = 96.56 : x
  2. Step 2: Convert to fraction form
    104.60/157.20 = 96.56/x
  3. Step 3: Cross multiply
    104.60x = 157.20 × 96.56
  4. Step 4: Simplify right side
    104.60x = 15,179.23
  5. Step 5: Solve for x
    x = 15,179.23/104.60
  6. Step 6: Final answer
    x = 145.12

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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.