Home / 1,090.16-1,635.08-440.96

Finding the Fourth Proportional to 1,090.16, 1,635.08 and 440.96

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Solution

The fourth proportional to 1,090.16, 1,635.08 and 440.96 is: 661.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090.16 : 1,635.08 = 440.96 : x
  2. Step 2: Convert to fraction form
    1,090.16/1,635.08 = 440.96/x
  3. Step 3: Cross multiply
    1,090.16x = 1,635.08 × 440.96
  4. Step 4: Simplify right side
    1,090.16x = 721,004.88
  5. Step 5: Solve for x
    x = 721,004.88/1,090.16
  6. Step 6: Final answer
    x = 661.38

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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.