Finding the Fourth Proportional to 286.98, 432.08 and 252.96
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Solution
The fourth proportional to 286.98, 432.08 and 252.96 is: 380.86
Step by Step Solution
- Step 1: Write the proportion equation
286.98 : 432.08 = 252.96 : x - Step 2: Convert to fraction form
286.98/432.08 = 252.96/x - Step 3: Cross multiply
286.98x = 432.08 × 252.96 - Step 4: Simplify right side
286.98x = 109,298.96 - Step 5: Solve for x
x = 109,298.96/286.98 - Step 6: Final answer
x = 380.86
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.