Finding the Fourth Proportional to 412.97, 619.28 and 138.99
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Solution
The fourth proportional to 412.97, 619.28 and 138.99 is: 208.43
Step by Step Solution
- Step 1: Write the proportion equation
412.97 : 619.28 = 138.99 : x - Step 2: Convert to fraction form
412.97/619.28 = 138.99/x - Step 3: Cross multiply
412.97x = 619.28 × 138.99 - Step 4: Simplify right side
412.97x = 86,073.03 - Step 5: Solve for x
x = 86,073.03/412.97 - Step 6: Final answer
x = 208.43
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.