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Finding the Fourth Proportional to 328.92, 450.66 and 324.87

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Solution

The fourth proportional to 328.92, 450.66 and 324.87 is: 445.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.92 : 450.66 = 324.87 : x
  2. Step 2: Convert to fraction form
    328.92/450.66 = 324.87/x
  3. Step 3: Cross multiply
    328.92x = 450.66 × 324.87
  4. Step 4: Simplify right side
    328.92x = 146,405.91
  5. Step 5: Solve for x
    x = 146,405.91/328.92
  6. Step 6: Final answer
    x = 445.11

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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.