Finding the Fourth Proportional to 395.21, 545.84 and 247.97
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Solution
The fourth proportional to 395.21, 545.84 and 247.97 is: 342.48
Step by Step Solution
- Step 1: Write the proportion equation
395.21 : 545.84 = 247.97 : x - Step 2: Convert to fraction form
395.21/545.84 = 247.97/x - Step 3: Cross multiply
395.21x = 545.84 × 247.97 - Step 4: Simplify right side
395.21x = 135,351.94 - Step 5: Solve for x
x = 135,351.94/395.21 - Step 6: Final answer
x = 342.48
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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.