Finding the Fourth Proportional to 324.45, 447.21 and 225.99
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Solution
The fourth proportional to 324.45, 447.21 and 225.99 is: 311.50
Step by Step Solution
- Step 1: Write the proportion equation
324.45 : 447.21 = 225.99 : x - Step 2: Convert to fraction form
324.45/447.21 = 225.99/x - Step 3: Cross multiply
324.45x = 447.21 × 225.99 - Step 4: Simplify right side
324.45x = 101,064.99 - Step 5: Solve for x
x = 101,064.99/324.45 - Step 6: Final answer
x = 311.50
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.