Finding the Fourth Proportional to 283.84, 391.64 and 239.76
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Solution
The fourth proportional to 283.84, 391.64 and 239.76 is: 330.82
Step by Step Solution
- Step 1: Write the proportion equation
283.84 : 391.64 = 239.76 : x - Step 2: Convert to fraction form
283.84/391.64 = 239.76/x - Step 3: Cross multiply
283.84x = 391.64 × 239.76 - Step 4: Simplify right side
283.84x = 93,898.41 - Step 5: Solve for x
x = 93,898.41/283.84 - Step 6: Final answer
x = 330.82
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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.