Finding the Fourth Proportional to 135.18, 186.48 and 129.66
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Solution
The fourth proportional to 135.18, 186.48 and 129.66 is: 178.87
Step by Step Solution
- Step 1: Write the proportion equation
135.18 : 186.48 = 129.66 : x - Step 2: Convert to fraction form
135.18/186.48 = 129.66/x - Step 3: Cross multiply
135.18x = 186.48 × 129.66 - Step 4: Simplify right side
135.18x = 24,179.00 - Step 5: Solve for x
x = 24,179.00/135.18 - Step 6: Final answer
x = 178.87
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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.