Finding the Fourth Proportional to 741.99, 1,112.99 and 279.99
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Solution
The fourth proportional to 741.99, 1,112.99 and 279.99 is: 419.99
Step by Step Solution
- Step 1: Write the proportion equation
741.99 : 1,112.99 = 279.99 : x - Step 2: Convert to fraction form
741.99/1,112.99 = 279.99/x - Step 3: Cross multiply
741.99x = 1,112.99 × 279.99 - Step 4: Simplify right side
741.99x = 311,624.67 - Step 5: Solve for x
x = 311,624.67/741.99 - Step 6: Final answer
x = 419.99
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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.