Finding the Fourth Proportional to 197.10, 272.08 and 135.26
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Solution
The fourth proportional to 197.10, 272.08 and 135.26 is: 186.72
Step by Step Solution
- Step 1: Write the proportion equation
197.10 : 272.08 = 135.26 : x - Step 2: Convert to fraction form
197.10/272.08 = 135.26/x - Step 3: Cross multiply
197.10x = 272.08 × 135.26 - Step 4: Simplify right side
197.10x = 36,801.54 - Step 5: Solve for x
x = 36,801.54/197.10 - Step 6: Final answer
x = 186.72
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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.