Finding the Fourth Proportional to 193.80, 267.18 and 135.48
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Solution
The fourth proportional to 193.80, 267.18 and 135.48 is: 186.78
Step by Step Solution
- Step 1: Write the proportion equation
193.80 : 267.18 = 135.48 : x - Step 2: Convert to fraction form
193.80/267.18 = 135.48/x - Step 3: Cross multiply
193.80x = 267.18 × 135.48 - Step 4: Simplify right side
193.80x = 36,197.55 - Step 5: Solve for x
x = 36,197.55/193.80 - Step 6: Final answer
x = 186.78
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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.