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Finding the Fourth Proportional to 578.94, 867.69 and 290.46

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Solution

The fourth proportional to 578.94, 867.69 and 290.46 is: 435.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.94 : 867.69 = 290.46 : x
  2. Step 2: Convert to fraction form
    578.94/867.69 = 290.46/x
  3. Step 3: Cross multiply
    578.94x = 867.69 × 290.46
  4. Step 4: Simplify right side
    578.94x = 252,029.24
  5. Step 5: Solve for x
    x = 252,029.24/578.94
  6. Step 6: Final answer
    x = 435.33

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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.