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Finding the Fourth Proportional to 265.08, 365.79 and 209.96

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Solution

The fourth proportional to 265.08, 365.79 and 209.96 is: 289.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.08 : 365.79 = 209.96 : x
  2. Step 2: Convert to fraction form
    265.08/365.79 = 209.96/x
  3. Step 3: Cross multiply
    265.08x = 365.79 × 209.96
  4. Step 4: Simplify right side
    265.08x = 76,801.27
  5. Step 5: Solve for x
    x = 76,801.27/265.08
  6. Step 6: Final answer
    x = 289.73

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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.