Finding the Fourth Proportional to 135.29, 186.68 and 77.06
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Solution
The fourth proportional to 135.29, 186.68 and 77.06 is: 106.33
Step by Step Solution
- Step 1: Write the proportion equation
135.29 : 186.68 = 77.06 : x - Step 2: Convert to fraction form
135.29/186.68 = 77.06/x - Step 3: Cross multiply
135.29x = 186.68 × 77.06 - Step 4: Simplify right side
135.29x = 14,386.22 - Step 5: Solve for x
x = 14,386.22/135.29 - Step 6: Final answer
x = 106.33
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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.