Finding the Fourth Proportional to 163.20, 225.19 and 97.70
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Solution
The fourth proportional to 163.20, 225.19 and 97.70 is: 134.81
Step by Step Solution
- Step 1: Write the proportion equation
163.20 : 225.19 = 97.70 : x - Step 2: Convert to fraction form
163.20/225.19 = 97.70/x - Step 3: Cross multiply
163.20x = 225.19 × 97.70 - Step 4: Simplify right side
163.20x = 22,001.06 - Step 5: Solve for x
x = 22,001.06/163.20 - Step 6: Final answer
x = 134.81
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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.