Finding the Fourth Proportional to 420.68, 631.08 and 146.70
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Solution
The fourth proportional to 420.68, 631.08 and 146.70 is: 220.07
Step by Step Solution
- Step 1: Write the proportion equation
420.68 : 631.08 = 146.70 : x - Step 2: Convert to fraction form
420.68/631.08 = 146.70/x - Step 3: Cross multiply
420.68x = 631.08 × 146.70 - Step 4: Simplify right side
420.68x = 92,579.44 - Step 5: Solve for x
x = 92,579.44/420.68 - Step 6: Final answer
x = 220.07
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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.