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Finding the Fourth Proportional to 330.17, 452.82 and 321.93

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Solution

The fourth proportional to 330.17, 452.82 and 321.93 is: 441.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.17 : 452.82 = 321.93 : x
  2. Step 2: Convert to fraction form
    330.17/452.82 = 321.93/x
  3. Step 3: Cross multiply
    330.17x = 452.82 × 321.93
  4. Step 4: Simplify right side
    330.17x = 145,776.34
  5. Step 5: Solve for x
    x = 145,776.34/330.17
  6. Step 6: Final answer
    x = 441.53

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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.