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Finding the Fourth Proportional to 1,230.27, 1,847.43 and 864.96

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Solution

The fourth proportional to 1,230.27, 1,847.43 and 864.96 is: 1,298.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230.27 : 1,847.43 = 864.96 : x
  2. Step 2: Convert to fraction form
    1,230.27/1,847.43 = 864.96/x
  3. Step 3: Cross multiply
    1,230.27x = 1,847.43 × 864.96
  4. Step 4: Simplify right side
    1,230.27x = 1,597,953.05
  5. Step 5: Solve for x
    x = 1,597,953.05/1,230.27
  6. Step 6: Final answer
    x = 1,298.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.