Finding the Fourth Proportional to 219.41, 302.77 and 130.99
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Solution
The fourth proportional to 219.41, 302.77 and 130.99 is: 180.75
Step by Step Solution
- Step 1: Write the proportion equation
219.41 : 302.77 = 130.99 : x - Step 2: Convert to fraction form
219.41/302.77 = 130.99/x - Step 3: Cross multiply
219.41x = 302.77 × 130.99 - Step 4: Simplify right side
219.41x = 39,657.67 - Step 5: Solve for x
x = 39,657.67/219.41 - Step 6: Final answer
x = 180.75
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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.