Finding the Fourth Proportional to 133.26, 199.88 and 57.26
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Solution
The fourth proportional to 133.26, 199.88 and 57.26 is: 85.89
Step by Step Solution
- Step 1: Write the proportion equation
133.26 : 199.88 = 57.26 : x - Step 2: Convert to fraction form
133.26/199.88 = 57.26/x - Step 3: Cross multiply
133.26x = 199.88 × 57.26 - Step 4: Simplify right side
133.26x = 11,445.13 - Step 5: Solve for x
x = 11,445.13/133.26 - Step 6: Final answer
x = 85.89
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.