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Finding the Fourth Proportional to 312.24, 467.94 and 149.64

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Solution

The fourth proportional to 312.24, 467.94 and 149.64 is: 224.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    312.24 : 467.94 = 149.64 : x
  2. Step 2: Convert to fraction form
    312.24/467.94 = 149.64/x
  3. Step 3: Cross multiply
    312.24x = 467.94 × 149.64
  4. Step 4: Simplify right side
    312.24x = 70,022.54
  5. Step 5: Solve for x
    x = 70,022.54/312.24
  6. Step 6: Final answer
    x = 224.26

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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.