Home / 1,090.50-1,635.73-268.79

Finding the Fourth Proportional to 1,090.50, 1,635.73 and 268.79

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Solution

The fourth proportional to 1,090.50, 1,635.73 and 268.79 is: 403.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090.50 : 1,635.73 = 268.79 : x
  2. Step 2: Convert to fraction form
    1,090.50/1,635.73 = 268.79/x
  3. Step 3: Cross multiply
    1,090.50x = 1,635.73 × 268.79
  4. Step 4: Simplify right side
    1,090.50x = 439,659.02
  5. Step 5: Solve for x
    x = 439,659.02/1,090.50
  6. Step 6: Final answer
    x = 403.17

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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.