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Finding the Fourth Proportional to 906.33, 1,359.75 and 290.22

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Solution

The fourth proportional to 906.33, 1,359.75 and 290.22 is: 435.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    906.33 : 1,359.75 = 290.22 : x
  2. Step 2: Convert to fraction form
    906.33/1,359.75 = 290.22/x
  3. Step 3: Cross multiply
    906.33x = 1,359.75 × 290.22
  4. Step 4: Simplify right side
    906.33x = 394,626.65
  5. Step 5: Solve for x
    x = 394,626.65/906.33
  6. Step 6: Final answer
    x = 435.41

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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.