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Finding the Fourth Proportional to 328.20, 491.82 and 183.96

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Solution

The fourth proportional to 328.20, 491.82 and 183.96 is: 275.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.20 : 491.82 = 183.96 : x
  2. Step 2: Convert to fraction form
    328.20/491.82 = 183.96/x
  3. Step 3: Cross multiply
    328.20x = 491.82 × 183.96
  4. Step 4: Simplify right side
    328.20x = 90,475.21
  5. Step 5: Solve for x
    x = 90,475.21/328.20
  6. Step 6: Final answer
    x = 275.67

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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.