Finding the Fourth Proportional to 210.26, 290.18 and 122.93
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Solution
The fourth proportional to 210.26, 290.18 and 122.93 is: 169.65
Step by Step Solution
- Step 1: Write the proportion equation
210.26 : 290.18 = 122.93 : x - Step 2: Convert to fraction form
210.26/290.18 = 122.93/x - Step 3: Cross multiply
210.26x = 290.18 × 122.93 - Step 4: Simplify right side
210.26x = 35,669.76 - Step 5: Solve for x
x = 35,669.76/210.26 - Step 6: Final answer
x = 169.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.