Finding the Fourth Proportional to 163.41, 225.36 and 135.74
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Solution
The fourth proportional to 163.41, 225.36 and 135.74 is: 187.19
Step by Step Solution
- Step 1: Write the proportion equation
163.41 : 225.36 = 135.74 : x - Step 2: Convert to fraction form
163.41/225.36 = 135.74/x - Step 3: Cross multiply
163.41x = 225.36 × 135.74 - Step 4: Simplify right side
163.41x = 30,589.24 - Step 5: Solve for x
x = 30,589.24/163.41 - Step 6: Final answer
x = 187.19
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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.