Finding the Fourth Proportional to 210.92, 316.58 and 161.70
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Solution
The fourth proportional to 210.92, 316.58 and 161.70 is: 242.70
Step by Step Solution
- Step 1: Write the proportion equation
210.92 : 316.58 = 161.70 : x - Step 2: Convert to fraction form
210.92/316.58 = 161.70/x - Step 3: Cross multiply
210.92x = 316.58 × 161.70 - Step 4: Simplify right side
210.92x = 51,190.99 - Step 5: Solve for x
x = 51,190.99/210.92 - Step 6: Final answer
x = 242.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.