Finding the Fourth Proportional to 420.76, 631.18 and 160.84
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Solution
The fourth proportional to 420.76, 631.18 and 160.84 is: 241.28
Step by Step Solution
- Step 1: Write the proportion equation
420.76 : 631.18 = 160.84 : x - Step 2: Convert to fraction form
420.76/631.18 = 160.84/x - Step 3: Cross multiply
420.76x = 631.18 × 160.84 - Step 4: Simplify right side
420.76x = 101,518.99 - Step 5: Solve for x
x = 101,518.99/420.76 - Step 6: Final answer
x = 241.28
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.