Finding the Fourth Proportional to 1,225.96, 1,838.55 and 404.05
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Solution
The fourth proportional to 1,225.96, 1,838.55 and 404.05 is: 605.95
Step by Step Solution
- Step 1: Write the proportion equation
1,225.96 : 1,838.55 = 404.05 : x - Step 2: Convert to fraction form
1,225.96/1,838.55 = 404.05/x - Step 3: Cross multiply
1,225.96x = 1,838.55 × 404.05 - Step 4: Simplify right side
1,225.96x = 742,866.13 - Step 5: Solve for x
x = 742,866.13/1,225.96 - Step 6: Final answer
x = 605.95
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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.