Finding the Fourth Proportional to 100.59, 150.75 and 86.07
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Solution
The fourth proportional to 100.59, 150.75 and 86.07 is: 128.99
Step by Step Solution
- Step 1: Write the proportion equation
100.59 : 150.75 = 86.07 : x - Step 2: Convert to fraction form
100.59/150.75 = 86.07/x - Step 3: Cross multiply
100.59x = 150.75 × 86.07 - Step 4: Simplify right side
100.59x = 12,975.05 - Step 5: Solve for x
x = 12,975.05/100.59 - Step 6: Final answer
x = 128.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.