Finding the Fourth Proportional to 136.41, 204.69 and 55.31
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Solution
The fourth proportional to 136.41, 204.69 and 55.31 is: 83.00
Step by Step Solution
- Step 1: Write the proportion equation
136.41 : 204.69 = 55.31 : x - Step 2: Convert to fraction form
136.41/204.69 = 55.31/x - Step 3: Cross multiply
136.41x = 204.69 × 55.31 - Step 4: Simplify right side
136.41x = 11,321.40 - Step 5: Solve for x
x = 11,321.40/136.41 - Step 6: Final answer
x = 83.00
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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.