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Finding the Fourth Proportional to 325.06, 486.88 and 238.55

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Solution

The fourth proportional to 325.06, 486.88 and 238.55 is: 357.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.06 : 486.88 = 238.55 : x
  2. Step 2: Convert to fraction form
    325.06/486.88 = 238.55/x
  3. Step 3: Cross multiply
    325.06x = 486.88 × 238.55
  4. Step 4: Simplify right side
    325.06x = 116,142.19
  5. Step 5: Solve for x
    x = 116,142.19/325.06
  6. Step 6: Final answer
    x = 357.29

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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.