Finding the Fourth Proportional to 197.70, 272.93 and 135.62
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Solution
The fourth proportional to 197.70, 272.93 and 135.62 is: 187.22
Step by Step Solution
- Step 1: Write the proportion equation
197.70 : 272.93 = 135.62 : x - Step 2: Convert to fraction form
197.70/272.93 = 135.62/x - Step 3: Cross multiply
197.70x = 272.93 × 135.62 - Step 4: Simplify right side
197.70x = 37,013.40 - Step 5: Solve for x
x = 37,013.40/197.70 - Step 6: Final answer
x = 187.22
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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.