Finding the Fourth Proportional to 239.52, 358.64 and 207.84
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Solution
The fourth proportional to 239.52, 358.64 and 207.84 is: 311.20
Step by Step Solution
- Step 1: Write the proportion equation
239.52 : 358.64 = 207.84 : x - Step 2: Convert to fraction form
239.52/358.64 = 207.84/x - Step 3: Cross multiply
239.52x = 358.64 × 207.84 - Step 4: Simplify right side
239.52x = 74,539.74 - Step 5: Solve for x
x = 74,539.74/239.52 - Step 6: Final answer
x = 311.20
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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.