Finding the Fourth Proportional to 163.12, 243.43 and 135.84
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Solution
The fourth proportional to 163.12, 243.43 and 135.84 is: 202.72
Step by Step Solution
- Step 1: Write the proportion equation
163.12 : 243.43 = 135.84 : x - Step 2: Convert to fraction form
163.12/243.43 = 135.84/x - Step 3: Cross multiply
163.12x = 243.43 × 135.84 - Step 4: Simplify right side
163.12x = 33,067.53 - Step 5: Solve for x
x = 33,067.53/163.12 - Step 6: Final answer
x = 202.72
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.