Finding the Fourth Proportional to 1,493.92, 2,239.52 and 763.12
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Solution
The fourth proportional to 1,493.92, 2,239.52 and 763.12 is: 1,143.99
Step by Step Solution
- Step 1: Write the proportion equation
1,493.92 : 2,239.52 = 763.12 : x - Step 2: Convert to fraction form
1,493.92/2,239.52 = 763.12/x - Step 3: Cross multiply
1,493.92x = 2,239.52 × 763.12 - Step 4: Simplify right side
1,493.92x = 1,709,022.50 - Step 5: Solve for x
x = 1,709,022.50/1,493.92 - Step 6: Final answer
x = 1,143.99
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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.