Home / 1,022.55-1,411.20-580.56

Finding the Fourth Proportional to 1,022.55, 1,411.20 and 580.56

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Solution

The fourth proportional to 1,022.55, 1,411.20 and 580.56 is: 801.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,022.55 : 1,411.20 = 580.56 : x
  2. Step 2: Convert to fraction form
    1,022.55/1,411.20 = 580.56/x
  3. Step 3: Cross multiply
    1,022.55x = 1,411.20 × 580.56
  4. Step 4: Simplify right side
    1,022.55x = 819,286.27
  5. Step 5: Solve for x
    x = 819,286.27/1,022.55
  6. Step 6: Final answer
    x = 801.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.