Finding the Fourth Proportional to 631.19, 946.79 and 260.99
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Solution
The fourth proportional to 631.19, 946.79 and 260.99 is: 391.49
Step by Step Solution
- Step 1: Write the proportion equation
631.19 : 946.79 = 260.99 : x - Step 2: Convert to fraction form
631.19/946.79 = 260.99/x - Step 3: Cross multiply
631.19x = 946.79 × 260.99 - Step 4: Simplify right side
631.19x = 247,101.42 - Step 5: Solve for x
x = 247,101.42/631.19 - Step 6: Final answer
x = 391.49
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.