Home / 1,299.59-1,949.40-433.90

Finding the Fourth Proportional to 1,299.59, 1,949.40 and 433.90

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Solution

The fourth proportional to 1,299.59, 1,949.40 and 433.90 is: 650.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299.59 : 1,949.40 = 433.90 : x
  2. Step 2: Convert to fraction form
    1,299.59/1,949.40 = 433.90/x
  3. Step 3: Cross multiply
    1,299.59x = 1,949.40 × 433.90
  4. Step 4: Simplify right side
    1,299.59x = 845,839.78
  5. Step 5: Solve for x
    x = 845,839.78/1,299.59
  6. Step 6: Final answer
    x = 650.85

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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.