Finding the Fourth Proportional to 201.99, 278.58 and 136.62
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Solution
The fourth proportional to 201.99, 278.58 and 136.62 is: 188.42
Step by Step Solution
- Step 1: Write the proportion equation
201.99 : 278.58 = 136.62 : x - Step 2: Convert to fraction form
201.99/278.58 = 136.62/x - Step 3: Cross multiply
201.99x = 278.58 × 136.62 - Step 4: Simplify right side
201.99x = 38,059.60 - Step 5: Solve for x
x = 38,059.60/201.99 - Step 6: Final answer
x = 188.42
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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.