Home / 1,023.17-1,535.43-561.28

Finding the Fourth Proportional to 1,023.17, 1,535.43 and 561.28

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Solution

The fourth proportional to 1,023.17, 1,535.43 and 561.28 is: 842.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,023.17 : 1,535.43 = 561.28 : x
  2. Step 2: Convert to fraction form
    1,023.17/1,535.43 = 561.28/x
  3. Step 3: Cross multiply
    1,023.17x = 1,535.43 × 561.28
  4. Step 4: Simplify right side
    1,023.17x = 861,806.15
  5. Step 5: Solve for x
    x = 861,806.15/1,023.17
  6. Step 6: Final answer
    x = 842.29

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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.