Home / 1,086.25-1,629.38-264.53

Finding the Fourth Proportional to 1,086.25, 1,629.38 and 264.53

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Solution

The fourth proportional to 1,086.25, 1,629.38 and 264.53 is: 396.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086.25 : 1,629.38 = 264.53 : x
  2. Step 2: Convert to fraction form
    1,086.25/1,629.38 = 264.53/x
  3. Step 3: Cross multiply
    1,086.25x = 1,629.38 × 264.53
  4. Step 4: Simplify right side
    1,086.25x = 431,011.74
  5. Step 5: Solve for x
    x = 431,011.74/1,086.25
  6. Step 6: Final answer
    x = 396.79

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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.