Home / 1,086.32-1,629.47-264.61

Finding the Fourth Proportional to 1,086.32, 1,629.47 and 264.61

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Solution

The fourth proportional to 1,086.32, 1,629.47 and 264.61 is: 396.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086.32 : 1,629.47 = 264.61 : x
  2. Step 2: Convert to fraction form
    1,086.32/1,629.47 = 264.61/x
  3. Step 3: Cross multiply
    1,086.32x = 1,629.47 × 264.61
  4. Step 4: Simplify right side
    1,086.32x = 431,165.91
  5. Step 5: Solve for x
    x = 431,165.91/1,086.32
  6. Step 6: Final answer
    x = 396.91

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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.