Finding the Fourth Proportional to 344.99, 517.66 and 139.70
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Solution
The fourth proportional to 344.99, 517.66 and 139.70 is: 209.62
Step by Step Solution
- Step 1: Write the proportion equation
344.99 : 517.66 = 139.70 : x - Step 2: Convert to fraction form
344.99/517.66 = 139.70/x - Step 3: Cross multiply
344.99x = 517.66 × 139.70 - Step 4: Simplify right side
344.99x = 72,317.10 - Step 5: Solve for x
x = 72,317.10/344.99 - Step 6: Final answer
x = 209.62
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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.