Finding the Fourth Proportional to 150.70, 207.80 and 122.99
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Solution
The fourth proportional to 150.70, 207.80 and 122.99 is: 169.58
Step by Step Solution
- Step 1: Write the proportion equation
150.70 : 207.80 = 122.99 : x - Step 2: Convert to fraction form
150.70/207.80 = 122.99/x - Step 3: Cross multiply
150.70x = 207.80 × 122.99 - Step 4: Simplify right side
150.70x = 25,555.67 - Step 5: Solve for x
x = 25,555.67/150.70 - Step 6: Final answer
x = 169.58
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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.