Finding the Fourth Proportional to 135.44, 202.95 and 66.79
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Solution
The fourth proportional to 135.44, 202.95 and 66.79 is: 100.08
Step by Step Solution
- Step 1: Write the proportion equation
135.44 : 202.95 = 66.79 : x - Step 2: Convert to fraction form
135.44/202.95 = 66.79/x - Step 3: Cross multiply
135.44x = 202.95 × 66.79 - Step 4: Simplify right side
135.44x = 13,553.68 - Step 5: Solve for x
x = 13,553.68/135.44 - Step 6: Final answer
x = 100.08
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.