Finding the Fourth Proportional to 150.15, 207.24 and 87.99
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Solution
The fourth proportional to 150.15, 207.24 and 87.99 is: 121.45
Step by Step Solution
- Step 1: Write the proportion equation
150.15 : 207.24 = 87.99 : x - Step 2: Convert to fraction form
150.15/207.24 = 87.99/x - Step 3: Cross multiply
150.15x = 207.24 × 87.99 - Step 4: Simplify right side
150.15x = 18,235.05 - Step 5: Solve for x
x = 18,235.05/150.15 - Step 6: Final answer
x = 121.45
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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.