Finding the Fourth Proportional to 163.13, 225.11 and 97.70
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Solution
The fourth proportional to 163.13, 225.11 and 97.70 is: 134.82
Step by Step Solution
- Step 1: Write the proportion equation
163.13 : 225.11 = 97.70 : x - Step 2: Convert to fraction form
163.13/225.11 = 97.70/x - Step 3: Cross multiply
163.13x = 225.11 × 97.70 - Step 4: Simplify right side
163.13x = 21,992.37 - Step 5: Solve for x
x = 21,992.37/163.13 - Step 6: Final answer
x = 134.82
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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.