Finding the Fourth Proportional to 135.28, 202.97 and 74.33
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Solution
The fourth proportional to 135.28, 202.97 and 74.33 is: 111.52
Step by Step Solution
- Step 1: Write the proportion equation
135.28 : 202.97 = 74.33 : x - Step 2: Convert to fraction form
135.28/202.97 = 74.33/x - Step 3: Cross multiply
135.28x = 202.97 × 74.33 - Step 4: Simplify right side
135.28x = 15,086.76 - Step 5: Solve for x
x = 15,086.76/135.28 - Step 6: Final answer
x = 111.52
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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.