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Finding the Fourth Proportional to 104.07, 155.05 and 97.44

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Solution

The fourth proportional to 104.07, 155.05 and 97.44 is: 145.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    104.07 : 155.05 = 97.44 : x
  2. Step 2: Convert to fraction form
    104.07/155.05 = 97.44/x
  3. Step 3: Cross multiply
    104.07x = 155.05 × 97.44
  4. Step 4: Simplify right side
    104.07x = 15,108.07
  5. Step 5: Solve for x
    x = 15,108.07/104.07
  6. Step 6: Final answer
    x = 145.17

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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.