Home / 1,124.10-1,687.19-569.20

Finding the Fourth Proportional to 1,124.10, 1,687.19 and 569.20

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Solution

The fourth proportional to 1,124.10, 1,687.19 and 569.20 is: 854.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,124.10 : 1,687.19 = 569.20 : x
  2. Step 2: Convert to fraction form
    1,124.10/1,687.19 = 569.20/x
  3. Step 3: Cross multiply
    1,124.10x = 1,687.19 × 569.20
  4. Step 4: Simplify right side
    1,124.10x = 960,348.55
  5. Step 5: Solve for x
    x = 960,348.55/1,124.10
  6. Step 6: Final answer
    x = 854.33

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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.