Finding the Fourth Proportional to 151.49, 209.03 and 86.00
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Solution
The fourth proportional to 151.49, 209.03 and 86.00 is: 118.66
Step by Step Solution
- Step 1: Write the proportion equation
151.49 : 209.03 = 86.00 : x - Step 2: Convert to fraction form
151.49/209.03 = 86.00/x - Step 3: Cross multiply
151.49x = 209.03 × 86.00 - Step 4: Simplify right side
151.49x = 17,975.10 - Step 5: Solve for x
x = 17,975.10/151.49 - Step 6: Final answer
x = 118.66
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.