Finding the Fourth Proportional to 219.13, 302.18 and 157.26
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Solution
The fourth proportional to 219.13, 302.18 and 157.26 is: 216.87
Step by Step Solution
- Step 1: Write the proportion equation
219.13 : 302.18 = 157.26 : x - Step 2: Convert to fraction form
219.13/302.18 = 157.26/x - Step 3: Cross multiply
219.13x = 302.18 × 157.26 - Step 4: Simplify right side
219.13x = 47,521.22 - Step 5: Solve for x
x = 47,521.22/219.13 - Step 6: Final answer
x = 216.87
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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.