Finding the Fourth Proportional to 759.99, 1,139.30 and 528.99
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Solution
The fourth proportional to 759.99, 1,139.30 and 528.99 is: 793.01
Step by Step Solution
- Step 1: Write the proportion equation
759.99 : 1,139.30 = 528.99 : x - Step 2: Convert to fraction form
759.99/1,139.30 = 528.99/x - Step 3: Cross multiply
759.99x = 1,139.30 × 528.99 - Step 4: Simplify right side
759.99x = 602,678.81 - Step 5: Solve for x
x = 602,678.81/759.99 - Step 6: Final answer
x = 793.01
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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.