Home / 1,469.30-2,205.03-739.40

Finding the Fourth Proportional to 1,469.30, 2,205.03 and 739.40

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Solution

The fourth proportional to 1,469.30, 2,205.03 and 739.40 is: 1,109.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,469.30 : 2,205.03 = 739.40 : x
  2. Step 2: Convert to fraction form
    1,469.30/2,205.03 = 739.40/x
  3. Step 3: Cross multiply
    1,469.30x = 2,205.03 × 739.40
  4. Step 4: Simplify right side
    1,469.30x = 1,630,399.18
  5. Step 5: Solve for x
    x = 1,630,399.18/1,469.30
  6. Step 6: Final answer
    x = 1,109.64

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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.