Finding the Fourth Proportional to 197.69, 272.87 and 135.55
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Solution
The fourth proportional to 197.69, 272.87 and 135.55 is: 187.09
Step by Step Solution
- Step 1: Write the proportion equation
197.69 : 272.87 = 135.55 : x - Step 2: Convert to fraction form
197.69/272.87 = 135.55/x - Step 3: Cross multiply
197.69x = 272.87 × 135.55 - Step 4: Simplify right side
197.69x = 36,986.17 - Step 5: Solve for x
x = 36,986.17/197.69 - Step 6: Final answer
x = 187.09
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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.