Finding the Fourth Proportional to 260.18, 358.93 and 155.21
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Solution
The fourth proportional to 260.18, 358.93 and 155.21 is: 214.11
Step by Step Solution
- Step 1: Write the proportion equation
260.18 : 358.93 = 155.21 : x - Step 2: Convert to fraction form
260.18/358.93 = 155.21/x - Step 3: Cross multiply
260.18x = 358.93 × 155.21 - Step 4: Simplify right side
260.18x = 55,708.24 - Step 5: Solve for x
x = 55,708.24/260.18 - Step 6: Final answer
x = 214.11
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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.