Home / 1,108.11-1,529.21-610.77

Finding the Fourth Proportional to 1,108.11, 1,529.21 and 610.77

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Solution

The fourth proportional to 1,108.11, 1,529.21 and 610.77 is: 842.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,108.11 : 1,529.21 = 610.77 : x
  2. Step 2: Convert to fraction form
    1,108.11/1,529.21 = 610.77/x
  3. Step 3: Cross multiply
    1,108.11x = 1,529.21 × 610.77
  4. Step 4: Simplify right side
    1,108.11x = 933,995.59
  5. Step 5: Solve for x
    x = 933,995.59/1,108.11
  6. Step 6: Final answer
    x = 842.87

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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.