Finding the Fourth Proportional to 371.26, 557.30 and 208.99
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Solution
The fourth proportional to 371.26, 557.30 and 208.99 is: 313.72
Step by Step Solution
- Step 1: Write the proportion equation
371.26 : 557.30 = 208.99 : x - Step 2: Convert to fraction form
371.26/557.30 = 208.99/x - Step 3: Cross multiply
371.26x = 557.30 × 208.99 - Step 4: Simplify right side
371.26x = 116,470.13 - Step 5: Solve for x
x = 116,470.13/371.26 - Step 6: Final answer
x = 313.72
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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.