Home / 1,086.43-1,629.65-264.71

Finding the Fourth Proportional to 1,086.43, 1,629.65 and 264.71

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Solution

The fourth proportional to 1,086.43, 1,629.65 and 264.71 is: 397.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086.43 : 1,629.65 = 264.71 : x
  2. Step 2: Convert to fraction form
    1,086.43/1,629.65 = 264.71/x
  3. Step 3: Cross multiply
    1,086.43x = 1,629.65 × 264.71
  4. Step 4: Simplify right side
    1,086.43x = 431,384.65
  5. Step 5: Solve for x
    x = 431,384.65/1,086.43
  6. Step 6: Final answer
    x = 397.07

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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.