Finding the Fourth Proportional to 135.91, 187.44 and 83.45
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Solution
The fourth proportional to 135.91, 187.44 and 83.45 is: 115.09
Step by Step Solution
- Step 1: Write the proportion equation
135.91 : 187.44 = 83.45 : x - Step 2: Convert to fraction form
135.91/187.44 = 83.45/x - Step 3: Cross multiply
135.91x = 187.44 × 83.45 - Step 4: Simplify right side
135.91x = 15,640.93 - Step 5: Solve for x
x = 15,640.93/135.91 - Step 6: Final answer
x = 115.09
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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.