Home / 1,043.20-1,439.70-650.28

Finding the Fourth Proportional to 1,043.20, 1,439.70 and 650.28

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Solution

The fourth proportional to 1,043.20, 1,439.70 and 650.28 is: 897.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,043.20 : 1,439.70 = 650.28 : x
  2. Step 2: Convert to fraction form
    1,043.20/1,439.70 = 650.28/x
  3. Step 3: Cross multiply
    1,043.20x = 1,439.70 × 650.28
  4. Step 4: Simplify right side
    1,043.20x = 936,208.12
  5. Step 5: Solve for x
    x = 936,208.12/1,043.20
  6. Step 6: Final answer
    x = 897.44

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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.