Finding the Fourth Proportional to 133.14, 183.66 and 91.74
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Solution
The fourth proportional to 133.14, 183.66 and 91.74 is: 126.55
Step by Step Solution
- Step 1: Write the proportion equation
133.14 : 183.66 = 91.74 : x - Step 2: Convert to fraction form
133.14/183.66 = 91.74/x - Step 3: Cross multiply
133.14x = 183.66 × 91.74 - Step 4: Simplify right side
133.14x = 16,848.97 - Step 5: Solve for x
x = 16,848.97/133.14 - Step 6: Final answer
x = 126.55
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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.