Finding the Fourth Proportional to 178.21, 266.21 and 163.09
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Solution
The fourth proportional to 178.21, 266.21 and 163.09 is: 243.62
Step by Step Solution
- Step 1: Write the proportion equation
178.21 : 266.21 = 163.09 : x - Step 2: Convert to fraction form
178.21/266.21 = 163.09/x - Step 3: Cross multiply
178.21x = 266.21 × 163.09 - Step 4: Simplify right side
178.21x = 43,416.19 - Step 5: Solve for x
x = 43,416.19/178.21 - Step 6: Final answer
x = 243.62
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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.