Finding the Fourth Proportional to 75.04, 112.99 and 74.26
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Solution
The fourth proportional to 75.04, 112.99 and 74.26 is: 111.82
Step by Step Solution
- Step 1: Write the proportion equation
75.04 : 112.99 = 74.26 : x - Step 2: Convert to fraction form
75.04/112.99 = 74.26/x - Step 3: Cross multiply
75.04x = 112.99 × 74.26 - Step 4: Simplify right side
75.04x = 8,390.64 - Step 5: Solve for x
x = 8,390.64/75.04 - Step 6: Final answer
x = 111.82
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.