Finding the Fourth Proportional to 163.20, 225.08 and 114.08
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Solution
The fourth proportional to 163.20, 225.08 and 114.08 is: 157.34
Step by Step Solution
- Step 1: Write the proportion equation
163.20 : 225.08 = 114.08 : x - Step 2: Convert to fraction form
163.20/225.08 = 114.08/x - Step 3: Cross multiply
163.20x = 225.08 × 114.08 - Step 4: Simplify right side
163.20x = 25,677.13 - Step 5: Solve for x
x = 25,677.13/163.20 - Step 6: Final answer
x = 157.34
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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.