Finding the Fourth Proportional to 108.99, 163.53 and 74.97
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Solution
The fourth proportional to 108.99, 163.53 and 74.97 is: 112.49
Step by Step Solution
- Step 1: Write the proportion equation
108.99 : 163.53 = 74.97 : x - Step 2: Convert to fraction form
108.99/163.53 = 74.97/x - Step 3: Cross multiply
108.99x = 163.53 × 74.97 - Step 4: Simplify right side
108.99x = 12,259.84 - Step 5: Solve for x
x = 12,259.84/108.99 - Step 6: Final answer
x = 112.49
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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.