Finding the Fourth Proportional to 133.80, 201.74 and 113.66
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Solution
The fourth proportional to 133.80, 201.74 and 113.66 is: 171.37
Step by Step Solution
- Step 1: Write the proportion equation
133.80 : 201.74 = 113.66 : x - Step 2: Convert to fraction form
133.80/201.74 = 113.66/x - Step 3: Cross multiply
133.80x = 201.74 × 113.66 - Step 4: Simplify right side
133.80x = 22,929.77 - Step 5: Solve for x
x = 22,929.77/133.80 - Step 6: Final answer
x = 171.37
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.