Finding the Fourth Proportional to 395.96, 545.91 and 324.80
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Solution
The fourth proportional to 395.96, 545.91 and 324.80 is: 447.81
Step by Step Solution
- Step 1: Write the proportion equation
395.96 : 545.91 = 324.80 : x - Step 2: Convert to fraction form
395.96/545.91 = 324.80/x - Step 3: Cross multiply
395.96x = 545.91 × 324.80 - Step 4: Simplify right side
395.96x = 177,313.74 - Step 5: Solve for x
x = 177,313.74/395.96 - Step 6: Final answer
x = 447.81
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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.