Home / 1,180.45-1,625.29-899.79

Finding the Fourth Proportional to 1,180.45, 1,625.29 and 899.79

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Solution

The fourth proportional to 1,180.45, 1,625.29 and 899.79 is: 1,238.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,180.45 : 1,625.29 = 899.79 : x
  2. Step 2: Convert to fraction form
    1,180.45/1,625.29 = 899.79/x
  3. Step 3: Cross multiply
    1,180.45x = 1,625.29 × 899.79
  4. Step 4: Simplify right side
    1,180.45x = 1,462,419.69
  5. Step 5: Solve for x
    x = 1,462,419.69/1,180.45
  6. Step 6: Final answer
    x = 1,238.87

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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.