Home / 1,070.38-1,469.25-949.71

Finding the Fourth Proportional to 1,070.38, 1,469.25 and 949.71

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Solution

The fourth proportional to 1,070.38, 1,469.25 and 949.71 is: 1,303.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,070.38 : 1,469.25 = 949.71 : x
  2. Step 2: Convert to fraction form
    1,070.38/1,469.25 = 949.71/x
  3. Step 3: Cross multiply
    1,070.38x = 1,469.25 × 949.71
  4. Step 4: Simplify right side
    1,070.38x = 1,395,356.22
  5. Step 5: Solve for x
    x = 1,395,356.22/1,070.38
  6. Step 6: Final answer
    x = 1,303.61

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.