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Finding the Fourth Proportional to 205.33, 307.69 and 162.11

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Solution

The fourth proportional to 205.33, 307.69 and 162.11 is: 242.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    205.33 : 307.69 = 162.11 : x
  2. Step 2: Convert to fraction form
    205.33/307.69 = 162.11/x
  3. Step 3: Cross multiply
    205.33x = 307.69 × 162.11
  4. Step 4: Simplify right side
    205.33x = 49,879.63
  5. Step 5: Solve for x
    x = 49,879.63/205.33
  6. Step 6: Final answer
    x = 242.92

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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.