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Finding the Fourth Proportional to 283.91, 425.49 and 121.37

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Solution

The fourth proportional to 283.91, 425.49 and 121.37 is: 181.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.91 : 425.49 = 121.37 : x
  2. Step 2: Convert to fraction form
    283.91/425.49 = 121.37/x
  3. Step 3: Cross multiply
    283.91x = 425.49 × 121.37
  4. Step 4: Simplify right side
    283.91x = 51,641.72
  5. Step 5: Solve for x
    x = 51,641.72/283.91
  6. Step 6: Final answer
    x = 181.89

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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.