Home / 1,090.18-1,634.82-440.74

Finding the Fourth Proportional to 1,090.18, 1,634.82 and 440.74

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Solution

The fourth proportional to 1,090.18, 1,634.82 and 440.74 is: 660.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090.18 : 1,634.82 = 440.74 : x
  2. Step 2: Convert to fraction form
    1,090.18/1,634.82 = 440.74/x
  3. Step 3: Cross multiply
    1,090.18x = 1,634.82 × 440.74
  4. Step 4: Simplify right side
    1,090.18x = 720,530.57
  5. Step 5: Solve for x
    x = 720,530.57/1,090.18
  6. Step 6: Final answer
    x = 660.93

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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.