Finding the Fourth Proportional to 118.44, 177.36 and 79.84
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Solution
The fourth proportional to 118.44, 177.36 and 79.84 is: 119.56
Step by Step Solution
- Step 1: Write the proportion equation
118.44 : 177.36 = 79.84 : x - Step 2: Convert to fraction form
118.44/177.36 = 79.84/x - Step 3: Cross multiply
118.44x = 177.36 × 79.84 - Step 4: Simplify right side
118.44x = 14,160.42 - Step 5: Solve for x
x = 14,160.42/118.44 - Step 6: Final answer
x = 119.56
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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.