Finding the Fourth Proportional to 283.34, 390.99 and 158.99
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Solution
The fourth proportional to 283.34, 390.99 and 158.99 is: 219.40
Step by Step Solution
- Step 1: Write the proportion equation
283.34 : 390.99 = 158.99 : x - Step 2: Convert to fraction form
283.34/390.99 = 158.99/x - Step 3: Cross multiply
283.34x = 390.99 × 158.99 - Step 4: Simplify right side
283.34x = 62,163.50 - Step 5: Solve for x
x = 62,163.50/283.34 - Step 6: Final answer
x = 219.40
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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.