Finding the Fourth Proportional to 194.60, 268.52 and 128.99
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Solution
The fourth proportional to 194.60, 268.52 and 128.99 is: 177.99
Step by Step Solution
- Step 1: Write the proportion equation
194.60 : 268.52 = 128.99 : x - Step 2: Convert to fraction form
194.60/268.52 = 128.99/x - Step 3: Cross multiply
194.60x = 268.52 × 128.99 - Step 4: Simplify right side
194.60x = 34,636.42 - Step 5: Solve for x
x = 34,636.42/194.60 - Step 6: Final answer
x = 177.99
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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.