Finding the Fourth Proportional to 257.12, 354.84 and 239.84
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Solution
The fourth proportional to 257.12, 354.84 and 239.84 is: 330.99
Step by Step Solution
- Step 1: Write the proportion equation
257.12 : 354.84 = 239.84 : x - Step 2: Convert to fraction form
257.12/354.84 = 239.84/x - Step 3: Cross multiply
257.12x = 354.84 × 239.84 - Step 4: Simplify right side
257.12x = 85,104.83 - Step 5: Solve for x
x = 85,104.83/257.12 - Step 6: Final answer
x = 330.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.