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Finding the Fourth Proportional to 927.62, 1,392.15 and 343.19

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Solution

The fourth proportional to 927.62, 1,392.15 and 343.19 is: 515.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    927.62 : 1,392.15 = 343.19 : x
  2. Step 2: Convert to fraction form
    927.62/1,392.15 = 343.19/x
  3. Step 3: Cross multiply
    927.62x = 1,392.15 × 343.19
  4. Step 4: Simplify right side
    927.62x = 477,771.96
  5. Step 5: Solve for x
    x = 477,771.96/927.62
  6. Step 6: Final answer
    x = 515.05

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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.