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Finding the Fourth Proportional to 104.91, 156.51 and 97.05

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Solution

The fourth proportional to 104.91, 156.51 and 97.05 is: 144.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    104.91 : 156.51 = 97.05 : x
  2. Step 2: Convert to fraction form
    104.91/156.51 = 97.05/x
  3. Step 3: Cross multiply
    104.91x = 156.51 × 97.05
  4. Step 4: Simplify right side
    104.91x = 15,188.73
  5. Step 5: Solve for x
    x = 15,188.73/104.91
  6. Step 6: Final answer
    x = 144.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.