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Finding the Fourth Proportional to 1,043.41, 1,439.20 and 650.62

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Solution

The fourth proportional to 1,043.41, 1,439.20 and 650.62 is: 897.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,043.41 : 1,439.20 = 650.62 : x
  2. Step 2: Convert to fraction form
    1,043.41/1,439.20 = 650.62/x
  3. Step 3: Cross multiply
    1,043.41x = 1,439.20 × 650.62
  4. Step 4: Simplify right side
    1,043.41x = 936,372.30
  5. Step 5: Solve for x
    x = 936,372.30/1,043.41
  6. Step 6: Final answer
    x = 897.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.