Finding the Fourth Proportional to 324.40, 447.60 and 207.92
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Solution
The fourth proportional to 324.40, 447.60 and 207.92 is: 286.88
Step by Step Solution
- Step 1: Write the proportion equation
324.40 : 447.60 = 207.92 : x - Step 2: Convert to fraction form
324.40/447.60 = 207.92/x - Step 3: Cross multiply
324.40x = 447.60 × 207.92 - Step 4: Simplify right side
324.40x = 93,064.99 - Step 5: Solve for x
x = 93,064.99/324.40 - Step 6: Final answer
x = 286.88
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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.