Home / 1,090.10-1,634.43-440.18

Finding the Fourth Proportional to 1,090.10, 1,634.43 and 440.18

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Solution

The fourth proportional to 1,090.10, 1,634.43 and 440.18 is: 659.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090.10 : 1,634.43 = 440.18 : x
  2. Step 2: Convert to fraction form
    1,090.10/1,634.43 = 440.18/x
  3. Step 3: Cross multiply
    1,090.10x = 1,634.43 × 440.18
  4. Step 4: Simplify right side
    1,090.10x = 719,443.40
  5. Step 5: Solve for x
    x = 719,443.40/1,090.10
  6. Step 6: Final answer
    x = 659.98

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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.