Finding the Fourth Proportional to 219.54, 302.91 and 130.99
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Solution
The fourth proportional to 219.54, 302.91 and 130.99 is: 180.74
Step by Step Solution
- Step 1: Write the proportion equation
219.54 : 302.91 = 130.99 : x - Step 2: Convert to fraction form
219.54/302.91 = 130.99/x - Step 3: Cross multiply
219.54x = 302.91 × 130.99 - Step 4: Simplify right side
219.54x = 39,679.46 - Step 5: Solve for x
x = 39,679.46/219.54 - Step 6: Final answer
x = 180.74
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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.