Finding the Fourth Proportional to 150.13, 207.18 and 91.94
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Solution
The fourth proportional to 150.13, 207.18 and 91.94 is: 126.88
Step by Step Solution
- Step 1: Write the proportion equation
150.13 : 207.18 = 91.94 : x - Step 2: Convert to fraction form
150.13/207.18 = 91.94/x - Step 3: Cross multiply
150.13x = 207.18 × 91.94 - Step 4: Simplify right side
150.13x = 19,048.13 - Step 5: Solve for x
x = 19,048.13/150.13 - Step 6: Final answer
x = 126.88
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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.