Finding the Fourth Proportional to 412.58, 619.18 and 207.09
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Solution
The fourth proportional to 412.58, 619.18 and 207.09 is: 310.79
Step by Step Solution
- Step 1: Write the proportion equation
412.58 : 619.18 = 207.09 : x - Step 2: Convert to fraction form
412.58/619.18 = 207.09/x - Step 3: Cross multiply
412.58x = 619.18 × 207.09 - Step 4: Simplify right side
412.58x = 128,225.99 - Step 5: Solve for x
x = 128,225.99/412.58 - Step 6: Final answer
x = 310.79
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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.