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Finding the Fourth Proportional to 456.01, 684.42 and 326

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Solution

The fourth proportional to 456.01, 684.42 and 326 is: 489.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.01 : 684.42 = 326 : x
  2. Step 2: Convert to fraction form
    456.01/684.42 = 326/x
  3. Step 3: Cross multiply
    456.01x = 684.42 × 326
  4. Step 4: Simplify right side
    456.01x = 223,119.29
  5. Step 5: Solve for x
    x = 223,119.29/456.01
  6. Step 6: Final answer
    x = 489.29

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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.