Finding the Fourth Proportional to 344.13, 516.36 and 138.75
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Solution
The fourth proportional to 344.13, 516.36 and 138.75 is: 208.19
Step by Step Solution
- Step 1: Write the proportion equation
344.13 : 516.36 = 138.75 : x - Step 2: Convert to fraction form
344.13/516.36 = 138.75/x - Step 3: Cross multiply
344.13x = 516.36 × 138.75 - Step 4: Simplify right side
344.13x = 71,644.95 - Step 5: Solve for x
x = 71,644.95/344.13 - Step 6: Final answer
x = 208.19
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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.