Finding the Fourth Proportional to 133.36, 183.93 and 91.91
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Solution
The fourth proportional to 133.36, 183.93 and 91.91 is: 126.76
Step by Step Solution
- Step 1: Write the proportion equation
133.36 : 183.93 = 91.91 : x - Step 2: Convert to fraction form
133.36/183.93 = 91.91/x - Step 3: Cross multiply
133.36x = 183.93 × 91.91 - Step 4: Simplify right side
133.36x = 16,904.26 - Step 5: Solve for x
x = 16,904.26/133.36 - Step 6: Final answer
x = 126.76
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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.