Finding the Fourth Proportional to 197.24, 272.36 and 135.05
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Solution
The fourth proportional to 197.24, 272.36 and 135.05 is: 186.48
Step by Step Solution
- Step 1: Write the proportion equation
197.24 : 272.36 = 135.05 : x - Step 2: Convert to fraction form
197.24/272.36 = 135.05/x - Step 3: Cross multiply
197.24x = 272.36 × 135.05 - Step 4: Simplify right side
197.24x = 36,780.18 - Step 5: Solve for x
x = 36,780.18/197.24 - Step 6: Final answer
x = 186.48
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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.