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Finding the Fourth Proportional to 834.32, 1,251.41 and 257.19

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Solution

The fourth proportional to 834.32, 1,251.41 and 257.19 is: 385.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    834.32 : 1,251.41 = 257.19 : x
  2. Step 2: Convert to fraction form
    834.32/1,251.41 = 257.19/x
  3. Step 3: Cross multiply
    834.32x = 1,251.41 × 257.19
  4. Step 4: Simplify right side
    834.32x = 321,848.85
  5. Step 5: Solve for x
    x = 321,848.85/834.32
  6. Step 6: Final answer
    x = 385.76

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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.