Finding the Fourth Proportional to 135.08, 186.40 and 86.02
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Solution
The fourth proportional to 135.08, 186.40 and 86.02 is: 118.70
Step by Step Solution
- Step 1: Write the proportion equation
135.08 : 186.40 = 86.02 : x - Step 2: Convert to fraction form
135.08/186.40 = 86.02/x - Step 3: Cross multiply
135.08x = 186.40 × 86.02 - Step 4: Simplify right side
135.08x = 16,034.13 - Step 5: Solve for x
x = 16,034.13/135.08 - Step 6: Final answer
x = 118.70
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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.