Finding the Fourth Proportional to 354.60, 531.91 and 135.23
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Solution
The fourth proportional to 354.60, 531.91 and 135.23 is: 202.85
Step by Step Solution
- Step 1: Write the proportion equation
354.60 : 531.91 = 135.23 : x - Step 2: Convert to fraction form
354.60/531.91 = 135.23/x - Step 3: Cross multiply
354.60x = 531.91 × 135.23 - Step 4: Simplify right side
354.60x = 71,931.18 - Step 5: Solve for x
x = 71,931.18/354.60 - Step 6: Final answer
x = 202.85
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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.