Finding the Fourth Proportional to 163.09, 225.21 and 151.75
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Solution
The fourth proportional to 163.09, 225.21 and 151.75 is: 209.55
Step by Step Solution
- Step 1: Write the proportion equation
163.09 : 225.21 = 151.75 : x - Step 2: Convert to fraction form
163.09/225.21 = 151.75/x - Step 3: Cross multiply
163.09x = 225.21 × 151.75 - Step 4: Simplify right side
163.09x = 34,175.62 - Step 5: Solve for x
x = 34,175.62/163.09 - Step 6: Final answer
x = 209.55
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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.