Finding the Fourth Proportional to 210.08, 289.84 and 122.68
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Solution
The fourth proportional to 210.08, 289.84 and 122.68 is: 169.26
Step by Step Solution
- Step 1: Write the proportion equation
210.08 : 289.84 = 122.68 : x - Step 2: Convert to fraction form
210.08/289.84 = 122.68/x - Step 3: Cross multiply
210.08x = 289.84 × 122.68 - Step 4: Simplify right side
210.08x = 35,557.57 - Step 5: Solve for x
x = 35,557.57/210.08 - Step 6: Final answer
x = 169.26
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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.