Finding the Fourth Proportional to 151.46, 209.02 and 85.99
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Solution
The fourth proportional to 151.46, 209.02 and 85.99 is: 118.66
Step by Step Solution
- Step 1: Write the proportion equation
151.46 : 209.02 = 85.99 : x - Step 2: Convert to fraction form
151.46/209.02 = 85.99/x - Step 3: Cross multiply
151.46x = 209.02 × 85.99 - Step 4: Simplify right side
151.46x = 17,972.15 - Step 5: Solve for x
x = 17,972.15/151.46 - Step 6: Final answer
x = 118.66
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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.