Finding the Fourth Proportional to 150.10, 207.12 and 87.92
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Solution
The fourth proportional to 150.10, 207.12 and 87.92 is: 121.32
Step by Step Solution
- Step 1: Write the proportion equation
150.10 : 207.12 = 87.92 : x - Step 2: Convert to fraction form
150.10/207.12 = 87.92/x - Step 3: Cross multiply
150.10x = 207.12 × 87.92 - Step 4: Simplify right side
150.10x = 18,209.99 - Step 5: Solve for x
x = 18,209.99/150.10 - Step 6: Final answer
x = 121.32
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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.