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Finding the Fourth Proportional to 325.76, 488.37 and 133.25

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Solution

The fourth proportional to 325.76, 488.37 and 133.25 is: 199.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.76 : 488.37 = 133.25 : x
  2. Step 2: Convert to fraction form
    325.76/488.37 = 133.25/x
  3. Step 3: Cross multiply
    325.76x = 488.37 × 133.25
  4. Step 4: Simplify right side
    325.76x = 65,075.30
  5. Step 5: Solve for x
    x = 65,075.30/325.76
  6. Step 6: Final answer
    x = 199.76

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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.