Finding the Fourth Proportional to 150.24, 206.91 and 115.14
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Solution
The fourth proportional to 150.24, 206.91 and 115.14 is: 158.57
Step by Step Solution
- Step 1: Write the proportion equation
150.24 : 206.91 = 115.14 : x - Step 2: Convert to fraction form
150.24/206.91 = 115.14/x - Step 3: Cross multiply
150.24x = 206.91 × 115.14 - Step 4: Simplify right side
150.24x = 23,823.62 - Step 5: Solve for x
x = 23,823.62/150.24 - Step 6: Final answer
x = 158.57
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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.