Home / 1,299.45-1,949.16-325.56

Finding the Fourth Proportional to 1,299.45, 1,949.16 and 325.56

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Solution

The fourth proportional to 1,299.45, 1,949.16 and 325.56 is: 488.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299.45 : 1,949.16 = 325.56 : x
  2. Step 2: Convert to fraction form
    1,299.45/1,949.16 = 325.56/x
  3. Step 3: Cross multiply
    1,299.45x = 1,949.16 × 325.56
  4. Step 4: Simplify right side
    1,299.45x = 634,577.06
  5. Step 5: Solve for x
    x = 634,577.06/1,299.45
  6. Step 6: Final answer
    x = 488.34

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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.