Finding the Fourth Proportional to 187.93, 281.91 and 79.70
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Solution
The fourth proportional to 187.93, 281.91 and 79.70 is: 119.56
Step by Step Solution
- Step 1: Write the proportion equation
187.93 : 281.91 = 79.70 : x - Step 2: Convert to fraction form
187.93/281.91 = 79.70/x - Step 3: Cross multiply
187.93x = 281.91 × 79.70 - Step 4: Simplify right side
187.93x = 22,468.23 - Step 5: Solve for x
x = 22,468.23/187.93 - 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.