Finding the Fourth Proportional to 135.24, 186.60 and 79.95
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Solution
The fourth proportional to 135.24, 186.60 and 79.95 is: 110.31
Step by Step Solution
- Step 1: Write the proportion equation
135.24 : 186.60 = 79.95 : x - Step 2: Convert to fraction form
135.24/186.60 = 79.95/x - Step 3: Cross multiply
135.24x = 186.60 × 79.95 - Step 4: Simplify right side
135.24x = 14,917.74 - Step 5: Solve for x
x = 14,917.74/135.24 - Step 6: Final answer
x = 110.31
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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.