Finding the Fourth Proportional to 479.70, 662.09 and 283.14
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Solution
The fourth proportional to 479.70, 662.09 and 283.14 is: 390.79
Step by Step Solution
- Step 1: Write the proportion equation
479.70 : 662.09 = 283.14 : x - Step 2: Convert to fraction form
479.70/662.09 = 283.14/x - Step 3: Cross multiply
479.70x = 662.09 × 283.14 - Step 4: Simplify right side
479.70x = 187,462.75 - Step 5: Solve for x
x = 187,462.75/479.70 - Step 6: Final answer
x = 390.79
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.