Finding the Fourth Proportional to 278.99, 385.03 and 160.99
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Solution
The fourth proportional to 278.99, 385.03 and 160.99 is: 222.17
Step by Step Solution
- Step 1: Write the proportion equation
278.99 : 385.03 = 160.99 : x - Step 2: Convert to fraction form
278.99/385.03 = 160.99/x - Step 3: Cross multiply
278.99x = 385.03 × 160.99 - Step 4: Simplify right side
278.99x = 61,984.43 - Step 5: Solve for x
x = 61,984.43/278.99 - Step 6: Final answer
x = 222.17
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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.