Finding the Fourth Proportional to 210.28, 290.08 and 122.92
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Solution
The fourth proportional to 210.28, 290.08 and 122.92 is: 169.57
Step by Step Solution
- Step 1: Write the proportion equation
210.28 : 290.08 = 122.92 : x - Step 2: Convert to fraction form
210.28/290.08 = 122.92/x - Step 3: Cross multiply
210.28x = 290.08 × 122.92 - Step 4: Simplify right side
210.28x = 35,656.63 - Step 5: Solve for x
x = 35,656.63/210.28 - Step 6: Final answer
x = 169.57
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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.