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Finding the Fourth Proportional to 235.80, 325.05 and 162

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Solution

The fourth proportional to 235.80, 325.05 and 162 is: 223.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.80 : 325.05 = 162 : x
  2. Step 2: Convert to fraction form
    235.80/325.05 = 162/x
  3. Step 3: Cross multiply
    235.80x = 325.05 × 162
  4. Step 4: Simplify right side
    235.80x = 52,658.10
  5. Step 5: Solve for x
    x = 52,658.10/235.80
  6. Step 6: Final answer
    x = 223.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.