Finding the Fourth Proportional to 412.99, 619.66 and 207.56
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Solution
The fourth proportional to 412.99, 619.66 and 207.56 is: 311.43
Step by Step Solution
- Step 1: Write the proportion equation
412.99 : 619.66 = 207.56 : x - Step 2: Convert to fraction form
412.99/619.66 = 207.56/x - Step 3: Cross multiply
412.99x = 619.66 × 207.56 - Step 4: Simplify right side
412.99x = 128,616.63 - Step 5: Solve for x
x = 128,616.63/412.99 - Step 6: Final answer
x = 311.43
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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.