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Finding the Fourth Proportional to 226.70, 339.95 and 105

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Solution

The fourth proportional to 226.70, 339.95 and 105 is: 157.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.70 : 339.95 = 105 : x
  2. Step 2: Convert to fraction form
    226.70/339.95 = 105/x
  3. Step 3: Cross multiply
    226.70x = 339.95 × 105
  4. Step 4: Simplify right side
    226.70x = 35,695.01
  5. Step 5: Solve for x
    x = 35,695.01/226.70
  6. Step 6: Final answer
    x = 157.45

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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.