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Finding the Fourth Proportional to 450.88, 674.64 and 321.18

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Solution

The fourth proportional to 450.88, 674.64 and 321.18 is: 480.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.88 : 674.64 = 321.18 : x
  2. Step 2: Convert to fraction form
    450.88/674.64 = 321.18/x
  3. Step 3: Cross multiply
    450.88x = 674.64 × 321.18
  4. Step 4: Simplify right side
    450.88x = 216,679.27
  5. Step 5: Solve for x
    x = 216,679.27/450.88
  6. Step 6: Final answer
    x = 480.57

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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.