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Finding the Fourth Proportional to 621.07, 929.94 and 327.96

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Solution

The fourth proportional to 621.07, 929.94 and 327.96 is: 491.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.07 : 929.94 = 327.96 : x
  2. Step 2: Convert to fraction form
    621.07/929.94 = 327.96/x
  3. Step 3: Cross multiply
    621.07x = 929.94 × 327.96
  4. Step 4: Simplify right side
    621.07x = 304,981.48
  5. Step 5: Solve for x
    x = 304,981.48/621.07
  6. Step 6: Final answer
    x = 491.06

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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.