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Finding the Fourth Proportional to 290.54, 433.90 and 232.85

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Solution

The fourth proportional to 290.54, 433.90 and 232.85 is: 347.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    290.54 : 433.90 = 232.85 : x
  2. Step 2: Convert to fraction form
    290.54/433.90 = 232.85/x
  3. Step 3: Cross multiply
    290.54x = 433.90 × 232.85
  4. Step 4: Simplify right side
    290.54x = 101,033.62
  5. Step 5: Solve for x
    x = 101,033.62/290.54
  6. Step 6: Final answer
    x = 347.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.