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Finding the Fourth Proportional to 235.21, 352.87 and 162.12

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Solution

The fourth proportional to 235.21, 352.87 and 162.12 is: 243.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.21 : 352.87 = 162.12 : x
  2. Step 2: Convert to fraction form
    235.21/352.87 = 162.12/x
  3. Step 3: Cross multiply
    235.21x = 352.87 × 162.12
  4. Step 4: Simplify right side
    235.21x = 57,208.20
  5. Step 5: Solve for x
    x = 57,208.20/235.21
  6. Step 6: Final answer
    x = 243.22

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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.