Finding the Fourth Proportional to 344.28, 516.26 and 138.68
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Solution
The fourth proportional to 344.28, 516.26 and 138.68 is: 207.95
Step by Step Solution
- Step 1: Write the proportion equation
344.28 : 516.26 = 138.68 : x - Step 2: Convert to fraction form
344.28/516.26 = 138.68/x - Step 3: Cross multiply
344.28x = 516.26 × 138.68 - Step 4: Simplify right side
344.28x = 71,592.70 - Step 5: Solve for x
x = 71,592.70/344.28 - Step 6: Final answer
x = 207.95
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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.