Finding the Fourth Proportional to 133.13, 183.58 and 80.68
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Solution
The fourth proportional to 133.13, 183.58 and 80.68 is: 111.26
Step by Step Solution
- Step 1: Write the proportion equation
133.13 : 183.58 = 80.68 : x - Step 2: Convert to fraction form
133.13/183.58 = 80.68/x - Step 3: Cross multiply
133.13x = 183.58 × 80.68 - Step 4: Simplify right side
133.13x = 14,811.23 - Step 5: Solve for x
x = 14,811.23/133.13 - Step 6: Final answer
x = 111.26
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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.