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Finding the Fourth Proportional to 325.82, 488.57 and 120.29

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Solution

The fourth proportional to 325.82, 488.57 and 120.29 is: 180.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.82 : 488.57 = 120.29 : x
  2. Step 2: Convert to fraction form
    325.82/488.57 = 120.29/x
  3. Step 3: Cross multiply
    325.82x = 488.57 × 120.29
  4. Step 4: Simplify right side
    325.82x = 58,767.04
  5. Step 5: Solve for x
    x = 58,767.04/325.82
  6. Step 6: Final answer
    x = 180.37

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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.