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Finding the Fourth Proportional to 235.21, 352.81 and 113.10

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Solution

The fourth proportional to 235.21, 352.81 and 113.10 is: 169.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.21 : 352.81 = 113.10 : x
  2. Step 2: Convert to fraction form
    235.21/352.81 = 113.10/x
  3. Step 3: Cross multiply
    235.21x = 352.81 × 113.10
  4. Step 4: Simplify right side
    235.21x = 39,902.81
  5. Step 5: Solve for x
    x = 39,902.81/235.21
  6. Step 6: Final answer
    x = 169.65

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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.