Finding the Fourth Proportional to 135.74, 187.26 and 80.48
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Solution
The fourth proportional to 135.74, 187.26 and 80.48 is: 111.03
Step by Step Solution
- Step 1: Write the proportion equation
135.74 : 187.26 = 80.48 : x - Step 2: Convert to fraction form
135.74/187.26 = 80.48/x - Step 3: Cross multiply
135.74x = 187.26 × 80.48 - Step 4: Simplify right side
135.74x = 15,070.68 - Step 5: Solve for x
x = 15,070.68/135.74 - Step 6: Final answer
x = 111.03
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.