Finding the Fourth Proportional to 517.20, 774.99 and 435.66
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Solution
The fourth proportional to 517.20, 774.99 and 435.66 is: 652.81
Step by Step Solution
- Step 1: Write the proportion equation
517.20 : 774.99 = 435.66 : x - Step 2: Convert to fraction form
517.20/774.99 = 435.66/x - Step 3: Cross multiply
517.20x = 774.99 × 435.66 - Step 4: Simplify right side
517.20x = 337,632.14 - Step 5: Solve for x
x = 337,632.14/517.20 - Step 6: Final answer
x = 652.81
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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.