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Finding the Fourth Proportional to 290.10, 434.35 and 226.10

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Solution

The fourth proportional to 290.10, 434.35 and 226.10 is: 338.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    290.10 : 434.35 = 226.10 : x
  2. Step 2: Convert to fraction form
    290.10/434.35 = 226.10/x
  3. Step 3: Cross multiply
    290.10x = 434.35 × 226.10
  4. Step 4: Simplify right side
    290.10x = 98,206.54
  5. Step 5: Solve for x
    x = 98,206.54/290.10
  6. Step 6: Final answer
    x = 338.53

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.