Finding the Fourth Proportional to 411.93, 616.95 and 342.99
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Solution
The fourth proportional to 411.93, 616.95 and 342.99 is: 513.70
Step by Step Solution
- Step 1: Write the proportion equation
411.93 : 616.95 = 342.99 : x - Step 2: Convert to fraction form
411.93/616.95 = 342.99/x - Step 3: Cross multiply
411.93x = 616.95 × 342.99 - Step 4: Simplify right side
411.93x = 211,607.68 - Step 5: Solve for x
x = 211,607.68/411.93 - Step 6: Final answer
x = 513.70
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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.