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Finding the Fourth Proportional to 290.73, 435.45 and 225.54

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Solution

The fourth proportional to 290.73, 435.45 and 225.54 is: 337.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    290.73 : 435.45 = 225.54 : x
  2. Step 2: Convert to fraction form
    290.73/435.45 = 225.54/x
  3. Step 3: Cross multiply
    290.73x = 435.45 × 225.54
  4. Step 4: Simplify right side
    290.73x = 98,211.39
  5. Step 5: Solve for x
    x = 98,211.39/290.73
  6. Step 6: Final answer
    x = 337.81

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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.