Finding the Fourth Proportional to 163.17, 225.15 and 97.66
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Solution
The fourth proportional to 163.17, 225.15 and 97.66 is: 134.75
Step by Step Solution
- Step 1: Write the proportion equation
163.17 : 225.15 = 97.66 : x - Step 2: Convert to fraction form
163.17/225.15 = 97.66/x - Step 3: Cross multiply
163.17x = 225.15 × 97.66 - Step 4: Simplify right side
163.17x = 21,987.02 - Step 5: Solve for x
x = 21,987.02/163.17 - Step 6: Final answer
x = 134.75
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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.