Finding the Fourth Proportional to 412.81, 619.28 and 207.17
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Solution
The fourth proportional to 412.81, 619.28 and 207.17 is: 310.79
Step by Step Solution
- Step 1: Write the proportion equation
412.81 : 619.28 = 207.17 : x - Step 2: Convert to fraction form
412.81/619.28 = 207.17/x - Step 3: Cross multiply
412.81x = 619.28 × 207.17 - Step 4: Simplify right side
412.81x = 128,296.24 - Step 5: Solve for x
x = 128,296.24/412.81 - Step 6: Final answer
x = 310.79
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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.