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Finding the Fourth Proportional to 333.07, 495.94 and 321.38

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Solution

The fourth proportional to 333.07, 495.94 and 321.38 is: 478.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.07 : 495.94 = 321.38 : x
  2. Step 2: Convert to fraction form
    333.07/495.94 = 321.38/x
  3. Step 3: Cross multiply
    333.07x = 495.94 × 321.38
  4. Step 4: Simplify right side
    333.07x = 159,385.20
  5. Step 5: Solve for x
    x = 159,385.20/333.07
  6. Step 6: Final answer
    x = 478.53

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.