Finding the Fourth Proportional to 163.97, 245.70 and 115.13
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Solution
The fourth proportional to 163.97, 245.70 and 115.13 is: 172.52
Step by Step Solution
- Step 1: Write the proportion equation
163.97 : 245.70 = 115.13 : x - Step 2: Convert to fraction form
163.97/245.70 = 115.13/x - Step 3: Cross multiply
163.97x = 245.70 × 115.13 - Step 4: Simplify right side
163.97x = 28,288.06 - Step 5: Solve for x
x = 28,288.06/163.97 - Step 6: Final answer
x = 172.52
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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.