Finding the Fourth Proportional to 163.96, 245.70 and 115.09
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Solution
The fourth proportional to 163.96, 245.70 and 115.09 is: 172.47
Step by Step Solution
- Step 1: Write the proportion equation
163.96 : 245.70 = 115.09 : x - Step 2: Convert to fraction form
163.96/245.70 = 115.09/x - Step 3: Cross multiply
163.96x = 245.70 × 115.09 - Step 4: Simplify right side
163.96x = 28,277.00 - Step 5: Solve for x
x = 28,277.00/163.96 - Step 6: Final answer
x = 172.47
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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.