Home / 1,108.15-1,529.19-610.78

Finding the Fourth Proportional to 1,108.15, 1,529.19 and 610.78

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Solution

The fourth proportional to 1,108.15, 1,529.19 and 610.78 is: 842.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,108.15 : 1,529.19 = 610.78 : x
  2. Step 2: Convert to fraction form
    1,108.15/1,529.19 = 610.78/x
  3. Step 3: Cross multiply
    1,108.15x = 1,529.19 × 610.78
  4. Step 4: Simplify right side
    1,108.15x = 933,998.67
  5. Step 5: Solve for x
    x = 933,998.67/1,108.15
  6. Step 6: Final answer
    x = 842.84

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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.