Home / 1,086.39-1,629.56-264.66

Finding the Fourth Proportional to 1,086.39, 1,629.56 and 264.66

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Solution

The fourth proportional to 1,086.39, 1,629.56 and 264.66 is: 396.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086.39 : 1,629.56 = 264.66 : x
  2. Step 2: Convert to fraction form
    1,086.39/1,629.56 = 264.66/x
  3. Step 3: Cross multiply
    1,086.39x = 1,629.56 × 264.66
  4. Step 4: Simplify right side
    1,086.39x = 431,278.03
  5. Step 5: Solve for x
    x = 431,278.03/1,086.39
  6. Step 6: Final answer
    x = 396.98

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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.