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Finding the Fourth Proportional to 70.24, 104.81 and 63.56

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Solution

The fourth proportional to 70.24, 104.81 and 63.56 is: 94.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    70.24 : 104.81 = 63.56 : x
  2. Step 2: Convert to fraction form
    70.24/104.81 = 63.56/x
  3. Step 3: Cross multiply
    70.24x = 104.81 × 63.56
  4. Step 4: Simplify right side
    70.24x = 6,661.72
  5. Step 5: Solve for x
    x = 6,661.72/70.24
  6. Step 6: Final answer
    x = 94.84

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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.