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Finding the Fourth Proportional to 69.45, 104.58 and 60.54

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Solution

The fourth proportional to 69.45, 104.58 and 60.54 is: 91.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    69.45 : 104.58 = 60.54 : x
  2. Step 2: Convert to fraction form
    69.45/104.58 = 60.54/x
  3. Step 3: Cross multiply
    69.45x = 104.58 × 60.54
  4. Step 4: Simplify right side
    69.45x = 6,330.90
  5. Step 5: Solve for x
    x = 6,330.90/69.45
  6. Step 6: Final answer
    x = 91.16

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.