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Finding the Fourth Proportional to 578.24, 867.23 and 269.80

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Solution

The fourth proportional to 578.24, 867.23 and 269.80 is: 404.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.24 : 867.23 = 269.80 : x
  2. Step 2: Convert to fraction form
    578.24/867.23 = 269.80/x
  3. Step 3: Cross multiply
    578.24x = 867.23 × 269.80
  4. Step 4: Simplify right side
    578.24x = 233,975.14
  5. Step 5: Solve for x
    x = 233,975.14/578.24
  6. Step 6: Final answer
    x = 404.64

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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.