Home / 1,025.19-1,536.80-440.61

Finding the Fourth Proportional to 1,025.19, 1,536.80 and 440.61

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Solution

The fourth proportional to 1,025.19, 1,536.80 and 440.61 is: 660.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,025.19 : 1,536.80 = 440.61 : x
  2. Step 2: Convert to fraction form
    1,025.19/1,536.80 = 440.61/x
  3. Step 3: Cross multiply
    1,025.19x = 1,536.80 × 440.61
  4. Step 4: Simplify right side
    1,025.19x = 677,119.56
  5. Step 5: Solve for x
    x = 677,119.56/1,025.19
  6. Step 6: Final answer
    x = 660.49

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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.