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Finding the Fourth Proportional to 328.87, 451.69 and 273.52

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Solution

The fourth proportional to 328.87, 451.69 and 273.52 is: 375.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.87 : 451.69 = 273.52 : x
  2. Step 2: Convert to fraction form
    328.87/451.69 = 273.52/x
  3. Step 3: Cross multiply
    328.87x = 451.69 × 273.52
  4. Step 4: Simplify right side
    328.87x = 123,546.25
  5. Step 5: Solve for x
    x = 123,546.25/328.87
  6. Step 6: Final answer
    x = 375.67

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.