Finding the Fourth Proportional to 74.08, 110.95 and 67.70
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Solution
The fourth proportional to 74.08, 110.95 and 67.70 is: 101.39
Step by Step Solution
- Step 1: Write the proportion equation
74.08 : 110.95 = 67.70 : x - Step 2: Convert to fraction form
74.08/110.95 = 67.70/x - Step 3: Cross multiply
74.08x = 110.95 × 67.70 - Step 4: Simplify right side
74.08x = 7,511.32 - Step 5: Solve for x
x = 7,511.32/74.08 - Step 6: Final answer
x = 101.39
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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.