Finding the Fourth Proportional to 219.24, 302.55 and 120.99
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Solution
The fourth proportional to 219.24, 302.55 and 120.99 is: 166.97
Step by Step Solution
- Step 1: Write the proportion equation
219.24 : 302.55 = 120.99 : x - Step 2: Convert to fraction form
219.24/302.55 = 120.99/x - Step 3: Cross multiply
219.24x = 302.55 × 120.99 - Step 4: Simplify right side
219.24x = 36,605.52 - Step 5: Solve for x
x = 36,605.52/219.24 - Step 6: Final answer
x = 166.97
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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.