Finding the Fourth Proportional to 279.28, 417.95 and 220.99
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Solution
The fourth proportional to 279.28, 417.95 and 220.99 is: 330.71
Step by Step Solution
- Step 1: Write the proportion equation
279.28 : 417.95 = 220.99 : x - Step 2: Convert to fraction form
279.28/417.95 = 220.99/x - Step 3: Cross multiply
279.28x = 417.95 × 220.99 - Step 4: Simplify right side
279.28x = 92,361.67 - Step 5: Solve for x
x = 92,361.67/279.28 - Step 6: Final answer
x = 330.71
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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.