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Finding the Fourth Proportional to 290.44, 400.53 and 269.23

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Solution

The fourth proportional to 290.44, 400.53 and 269.23 is: 371.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    290.44 : 400.53 = 269.23 : x
  2. Step 2: Convert to fraction form
    290.44/400.53 = 269.23/x
  3. Step 3: Cross multiply
    290.44x = 400.53 × 269.23
  4. Step 4: Simplify right side
    290.44x = 107,834.69
  5. Step 5: Solve for x
    x = 107,834.69/290.44
  6. Step 6: Final answer
    x = 371.28

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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.