Finding the Fourth Proportional to 395.75, 546.21 and 229.99
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Solution
The fourth proportional to 395.75, 546.21 and 229.99 is: 317.43
Step by Step Solution
- Step 1: Write the proportion equation
395.75 : 546.21 = 229.99 : x - Step 2: Convert to fraction form
395.75/546.21 = 229.99/x - Step 3: Cross multiply
395.75x = 546.21 × 229.99 - Step 4: Simplify right side
395.75x = 125,620.53 - Step 5: Solve for x
x = 125,620.53/395.75 - Step 6: Final answer
x = 317.43
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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.