Finding the Fourth Proportional to 201.51, 278.10 and 135.99
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Solution
The fourth proportional to 201.51, 278.10 and 135.99 is: 187.68
Step by Step Solution
- Step 1: Write the proportion equation
201.51 : 278.10 = 135.99 : x - Step 2: Convert to fraction form
201.51/278.10 = 135.99/x - Step 3: Cross multiply
201.51x = 278.10 × 135.99 - Step 4: Simplify right side
201.51x = 37,818.82 - Step 5: Solve for x
x = 37,818.82/201.51 - Step 6: Final answer
x = 187.68
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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.