Finding the Fourth Proportional to 261.68, 392.36 and 163.94
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Solution
The fourth proportional to 261.68, 392.36 and 163.94 is: 245.80
Step by Step Solution
- Step 1: Write the proportion equation
261.68 : 392.36 = 163.94 : x - Step 2: Convert to fraction form
261.68/392.36 = 163.94/x - Step 3: Cross multiply
261.68x = 392.36 × 163.94 - Step 4: Simplify right side
261.68x = 64,320.72 - Step 5: Solve for x
x = 64,320.72/261.68 - Step 6: Final answer
x = 245.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.