Finding the Fourth Proportional to 229.70, 316.74 and 163.28
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Solution
The fourth proportional to 229.70, 316.74 and 163.28 is: 225.15
Step by Step Solution
- Step 1: Write the proportion equation
229.70 : 316.74 = 163.28 : x - Step 2: Convert to fraction form
229.70/316.74 = 163.28/x - Step 3: Cross multiply
229.70x = 316.74 × 163.28 - Step 4: Simplify right side
229.70x = 51,714.91 - Step 5: Solve for x
x = 51,714.91/229.70 - Step 6: Final answer
x = 225.15
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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.