Finding the Fourth Proportional to 108.88, 163.36 and 51.08
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Solution
The fourth proportional to 108.88, 163.36 and 51.08 is: 76.64
Step by Step Solution
- Step 1: Write the proportion equation
108.88 : 163.36 = 51.08 : x - Step 2: Convert to fraction form
108.88/163.36 = 51.08/x - Step 3: Cross multiply
108.88x = 163.36 × 51.08 - Step 4: Simplify right side
108.88x = 8,344.43 - Step 5: Solve for x
x = 8,344.43/108.88 - Step 6: Final answer
x = 76.64
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.