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Finding the Fourth Proportional to 283.85, 425.97 and 121.65

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Solution

The fourth proportional to 283.85, 425.97 and 121.65 is: 182.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.85 : 425.97 = 121.65 : x
  2. Step 2: Convert to fraction form
    283.85/425.97 = 121.65/x
  3. Step 3: Cross multiply
    283.85x = 425.97 × 121.65
  4. Step 4: Simplify right side
    283.85x = 51,817.12
  5. Step 5: Solve for x
    x = 51,817.12/283.85
  6. Step 6: Final answer
    x = 182.55

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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.