Finding the Fourth Proportional to 134.63, 185.79 and 76.41
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Solution
The fourth proportional to 134.63, 185.79 and 76.41 is: 105.45
Step by Step Solution
- Step 1: Write the proportion equation
134.63 : 185.79 = 76.41 : x - Step 2: Convert to fraction form
134.63/185.79 = 76.41/x - Step 3: Cross multiply
134.63x = 185.79 × 76.41 - Step 4: Simplify right side
134.63x = 14,196.21 - Step 5: Solve for x
x = 14,196.21/134.63 - Step 6: Final answer
x = 105.45
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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.