Finding the Fourth Proportional to 118.22, 163.08 and 88.79
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Solution
The fourth proportional to 118.22, 163.08 and 88.79 is: 122.48
Step by Step Solution
- Step 1: Write the proportion equation
118.22 : 163.08 = 88.79 : x - Step 2: Convert to fraction form
118.22/163.08 = 88.79/x - Step 3: Cross multiply
118.22x = 163.08 × 88.79 - Step 4: Simplify right side
118.22x = 14,479.06 - Step 5: Solve for x
x = 14,479.06/118.22 - Step 6: Final answer
x = 122.48
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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.