Finding the Fourth Proportional to 163.68, 225.87 and 93.75
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Solution
The fourth proportional to 163.68, 225.87 and 93.75 is: 129.37
Step by Step Solution
- Step 1: Write the proportion equation
163.68 : 225.87 = 93.75 : x - Step 2: Convert to fraction form
163.68/225.87 = 93.75/x - Step 3: Cross multiply
163.68x = 225.87 × 93.75 - Step 4: Simplify right side
163.68x = 21,175.31 - Step 5: Solve for x
x = 21,175.31/163.68 - Step 6: Final answer
x = 129.37
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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.