Finding the Fourth Proportional to 201.98, 278.58 and 135.57
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Solution
The fourth proportional to 201.98, 278.58 and 135.57 is: 186.99
Step by Step Solution
- Step 1: Write the proportion equation
201.98 : 278.58 = 135.57 : x - Step 2: Convert to fraction form
201.98/278.58 = 135.57/x - Step 3: Cross multiply
201.98x = 278.58 × 135.57 - Step 4: Simplify right side
201.98x = 37,767.88 - Step 5: Solve for x
x = 37,767.88/201.98 - Step 6: Final answer
x = 186.99
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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.