Finding the Fourth Proportional to 319.68, 479.76 and 175.68
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Solution
The fourth proportional to 319.68, 479.76 and 175.68 is: 263.65
Step by Step Solution
- Step 1: Write the proportion equation
319.68 : 479.76 = 175.68 : x - Step 2: Convert to fraction form
319.68/479.76 = 175.68/x - Step 3: Cross multiply
319.68x = 479.76 × 175.68 - Step 4: Simplify right side
319.68x = 84,284.24 - Step 5: Solve for x
x = 84,284.24/319.68 - Step 6: Final answer
x = 263.65
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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.