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Finding the Fourth Proportional to 1,439.27, 2,159.04 and 573.38

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Solution

The fourth proportional to 1,439.27, 2,159.04 and 573.38 is: 860.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.27 : 2,159.04 = 573.38 : x
  2. Step 2: Convert to fraction form
    1,439.27/2,159.04 = 573.38/x
  3. Step 3: Cross multiply
    1,439.27x = 2,159.04 × 573.38
  4. Step 4: Simplify right side
    1,439.27x = 1,237,939.56
  5. Step 5: Solve for x
    x = 1,237,939.56/1,439.27
  6. Step 6: Final answer
    x = 860.12

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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.