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Finding the Fourth Proportional to 331.57, 499.83 and 309.27

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Solution

The fourth proportional to 331.57, 499.83 and 309.27 is: 466.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.57 : 499.83 = 309.27 : x
  2. Step 2: Convert to fraction form
    331.57/499.83 = 309.27/x
  3. Step 3: Cross multiply
    331.57x = 499.83 × 309.27
  4. Step 4: Simplify right side
    331.57x = 154,580.23
  5. Step 5: Solve for x
    x = 154,580.23/331.57
  6. Step 6: Final answer
    x = 466.21

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.