Finding the Fourth Proportional to 163.15, 225.15 and 97.68
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Solution
The fourth proportional to 163.15, 225.15 and 97.68 is: 134.80
Step by Step Solution
- Step 1: Write the proportion equation
163.15 : 225.15 = 97.68 : x - Step 2: Convert to fraction form
163.15/225.15 = 97.68/x - Step 3: Cross multiply
163.15x = 225.15 × 97.68 - Step 4: Simplify right side
163.15x = 21,992.65 - Step 5: Solve for x
x = 21,992.65/163.15 - Step 6: Final answer
x = 134.80
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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.