Finding the Fourth Proportional to 116.24, 174.12 and 90.56
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Solution
The fourth proportional to 116.24, 174.12 and 90.56 is: 135.65
Step by Step Solution
- Step 1: Write the proportion equation
116.24 : 174.12 = 90.56 : x - Step 2: Convert to fraction form
116.24/174.12 = 90.56/x - Step 3: Cross multiply
116.24x = 174.12 × 90.56 - Step 4: Simplify right side
116.24x = 15,768.31 - Step 5: Solve for x
x = 15,768.31/116.24 - Step 6: Final answer
x = 135.65
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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.