Finding the Fourth Proportional to 209.06, 313.67 and 87.26
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Solution
The fourth proportional to 209.06, 313.67 and 87.26 is: 130.92
Step by Step Solution
- Step 1: Write the proportion equation
209.06 : 313.67 = 87.26 : x - Step 2: Convert to fraction form
209.06/313.67 = 87.26/x - Step 3: Cross multiply
209.06x = 313.67 × 87.26 - Step 4: Simplify right side
209.06x = 27,371.19 - Step 5: Solve for x
x = 27,371.19/209.06 - Step 6: Final answer
x = 130.92
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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.