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Finding the Fourth Proportional to 209.35, 315.67 and 182.62

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Solution

The fourth proportional to 209.35, 315.67 and 182.62 is: 275.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    209.35 : 315.67 = 182.62 : x
  2. Step 2: Convert to fraction form
    209.35/315.67 = 182.62/x
  3. Step 3: Cross multiply
    209.35x = 315.67 × 182.62
  4. Step 4: Simplify right side
    209.35x = 57,647.66
  5. Step 5: Solve for x
    x = 57,647.66/209.35
  6. Step 6: Final answer
    x = 275.36

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.