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Finding the Fourth Proportional to 325.84, 488.72 and 82.37

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Solution

The fourth proportional to 325.84, 488.72 and 82.37 is: 123.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.84 : 488.72 = 82.37 : x
  2. Step 2: Convert to fraction form
    325.84/488.72 = 82.37/x
  3. Step 3: Cross multiply
    325.84x = 488.72 × 82.37
  4. Step 4: Simplify right side
    325.84x = 40,255.46
  5. Step 5: Solve for x
    x = 40,255.46/325.84
  6. Step 6: Final answer
    x = 123.54

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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.