Finding the Fourth Proportional to 163.44, 225.45 and 130.68
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Solution
The fourth proportional to 163.44, 225.45 and 130.68 is: 180.26
Step by Step Solution
- Step 1: Write the proportion equation
163.44 : 225.45 = 130.68 : x - Step 2: Convert to fraction form
163.44/225.45 = 130.68/x - Step 3: Cross multiply
163.44x = 225.45 × 130.68 - Step 4: Simplify right side
163.44x = 29,461.81 - Step 5: Solve for x
x = 29,461.81/163.44 - Step 6: Final answer
x = 180.26
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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.