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Finding the Fourth Proportional to 290.27, 400.19 and 235.29

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Solution

The fourth proportional to 290.27, 400.19 and 235.29 is: 324.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    290.27 : 400.19 = 235.29 : x
  2. Step 2: Convert to fraction form
    290.27/400.19 = 235.29/x
  3. Step 3: Cross multiply
    290.27x = 400.19 × 235.29
  4. Step 4: Simplify right side
    290.27x = 94,159.53
  5. Step 5: Solve for x
    x = 94,159.53/290.27
  6. Step 6: Final answer
    x = 324.39

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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.