Finding the Fourth Proportional to 672.99, 1,009.14 and 518.99
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Solution
The fourth proportional to 672.99, 1,009.14 and 518.99 is: 778.21
Step by Step Solution
- Step 1: Write the proportion equation
672.99 : 1,009.14 = 518.99 : x - Step 2: Convert to fraction form
672.99/1,009.14 = 518.99/x - Step 3: Cross multiply
672.99x = 1,009.14 × 518.99 - Step 4: Simplify right side
672.99x = 523,728.52 - Step 5: Solve for x
x = 523,728.52/672.99 - Step 6: Final answer
x = 778.21
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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.