Home / 1,230.44-1,688.45-1,119.06

Finding the Fourth Proportional to 1,230.44, 1,688.45 and 1,119.06

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Solution

The fourth proportional to 1,230.44, 1,688.45 and 1,119.06 is: 1,535.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230.44 : 1,688.45 = 1,119.06 : x
  2. Step 2: Convert to fraction form
    1,230.44/1,688.45 = 1,119.06/x
  3. Step 3: Cross multiply
    1,230.44x = 1,688.45 × 1,119.06
  4. Step 4: Simplify right side
    1,230.44x = 1,889,471.26
  5. Step 5: Solve for x
    x = 1,889,471.26/1,230.44
  6. Step 6: Final answer
    x = 1,535.61

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.