Finding the Fourth Proportional to 412.98, 618.44 and 207.65
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Solution
The fourth proportional to 412.98, 618.44 and 207.65 is: 310.95
Step by Step Solution
- Step 1: Write the proportion equation
412.98 : 618.44 = 207.65 : x - Step 2: Convert to fraction form
412.98/618.44 = 207.65/x - Step 3: Cross multiply
412.98x = 618.44 × 207.65 - Step 4: Simplify right side
412.98x = 128,417.26 - Step 5: Solve for x
x = 128,417.26/412.98 - Step 6: Final answer
x = 310.95
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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.