Home / 1,090.16-1,634.78-440.44

Finding the Fourth Proportional to 1,090.16, 1,634.78 and 440.44

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Solution

The fourth proportional to 1,090.16, 1,634.78 and 440.44 is: 660.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090.16 : 1,634.78 = 440.44 : x
  2. Step 2: Convert to fraction form
    1,090.16/1,634.78 = 440.44/x
  3. Step 3: Cross multiply
    1,090.16x = 1,634.78 × 440.44
  4. Step 4: Simplify right side
    1,090.16x = 720,019.52
  5. Step 5: Solve for x
    x = 720,019.52/1,090.16
  6. Step 6: Final answer
    x = 660.47

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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.