Finding the Fourth Proportional to 344.49, 516.99 and 139.08
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Solution
The fourth proportional to 344.49, 516.99 and 139.08 is: 208.72
Step by Step Solution
- Step 1: Write the proportion equation
344.49 : 516.99 = 139.08 : x - Step 2: Convert to fraction form
344.49/516.99 = 139.08/x - Step 3: Cross multiply
344.49x = 516.99 × 139.08 - Step 4: Simplify right side
344.49x = 71,902.97 - Step 5: Solve for x
x = 71,902.97/344.49 - Step 6: Final answer
x = 208.72
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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.