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Finding the Fourth Proportional to 329.17, 453.33 and 321.99

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Solution

The fourth proportional to 329.17, 453.33 and 321.99 is: 443.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.17 : 453.33 = 321.99 : x
  2. Step 2: Convert to fraction form
    329.17/453.33 = 321.99/x
  3. Step 3: Cross multiply
    329.17x = 453.33 × 321.99
  4. Step 4: Simplify right side
    329.17x = 145,968.86
  5. Step 5: Solve for x
    x = 145,968.86/329.17
  6. Step 6: Final answer
    x = 443.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.