Finding the Fourth Proportional to 745.21, 1,118 and 282.99
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Solution
The fourth proportional to 745.21, 1,118 and 282.99 is: 424.56
Step by Step Solution
- Step 1: Write the proportion equation
745.21 : 1,118 = 282.99 : x - Step 2: Convert to fraction form
745.21/1,118 = 282.99/x - Step 3: Cross multiply
745.21x = 1,118 × 282.99 - Step 4: Simplify right side
745.21x = 316,382.82 - Step 5: Solve for x
x = 316,382.82/745.21 - Step 6: Final answer
x = 424.56
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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.