Finding the Fourth Proportional to 110.91, 153.08 and 74.01
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Solution
The fourth proportional to 110.91, 153.08 and 74.01 is: 102.15
Step by Step Solution
- Step 1: Write the proportion equation
110.91 : 153.08 = 74.01 : x - Step 2: Convert to fraction form
110.91/153.08 = 74.01/x - Step 3: Cross multiply
110.91x = 153.08 × 74.01 - Step 4: Simplify right side
110.91x = 11,329.08 - Step 5: Solve for x
x = 11,329.08/110.91 - Step 6: Final answer
x = 102.15
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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.