Finding the Fourth Proportional to 316.06, 436.26 and 199.70
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Solution
The fourth proportional to 316.06, 436.26 and 199.70 is: 275.65
Step by Step Solution
- Step 1: Write the proportion equation
316.06 : 436.26 = 199.70 : x - Step 2: Convert to fraction form
316.06/436.26 = 199.70/x - Step 3: Cross multiply
316.06x = 436.26 × 199.70 - Step 4: Simplify right side
316.06x = 87,121.12 - Step 5: Solve for x
x = 87,121.12/316.06 - Step 6: Final answer
x = 275.65
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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.