Finding the Fourth Proportional to 100.71, 150.96 and 38.99
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Solution
The fourth proportional to 100.71, 150.96 and 38.99 is: 58.45
Step by Step Solution
- Step 1: Write the proportion equation
100.71 : 150.96 = 38.99 : x - Step 2: Convert to fraction form
100.71/150.96 = 38.99/x - Step 3: Cross multiply
100.71x = 150.96 × 38.99 - Step 4: Simplify right side
100.71x = 5,886.21 - Step 5: Solve for x
x = 5,886.21/100.71 - Step 6: Final answer
x = 58.45
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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.