Finding the Fourth Proportional to 210.84, 290.92 and 122.33
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Solution
The fourth proportional to 210.84, 290.92 and 122.33 is: 168.79
Step by Step Solution
- Step 1: Write the proportion equation
210.84 : 290.92 = 122.33 : x - Step 2: Convert to fraction form
210.84/290.92 = 122.33/x - Step 3: Cross multiply
210.84x = 290.92 × 122.33 - Step 4: Simplify right side
210.84x = 35,588.24 - Step 5: Solve for x
x = 35,588.24/210.84 - Step 6: Final answer
x = 168.79
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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.