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Finding the Fourth Proportional to 324.83, 448.70 and 269.85

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Solution

The fourth proportional to 324.83, 448.70 and 269.85 is: 372.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.83 : 448.70 = 269.85 : x
  2. Step 2: Convert to fraction form
    324.83/448.70 = 269.85/x
  3. Step 3: Cross multiply
    324.83x = 448.70 × 269.85
  4. Step 4: Simplify right side
    324.83x = 121,081.70
  5. Step 5: Solve for x
    x = 121,081.70/324.83
  6. Step 6: Final answer
    x = 372.75

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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.