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Finding the Fourth Proportional to 70.37, 105.53 and 22.26

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Solution

The fourth proportional to 70.37, 105.53 and 22.26 is: 33.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    70.37 : 105.53 = 22.26 : x
  2. Step 2: Convert to fraction form
    70.37/105.53 = 22.26/x
  3. Step 3: Cross multiply
    70.37x = 105.53 × 22.26
  4. Step 4: Simplify right side
    70.37x = 2,349.15
  5. Step 5: Solve for x
    x = 2,349.15/70.37
  6. Step 6: Final answer
    x = 33.39

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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.