Home / 1,433.70-2,150.82-459.90

Finding the Fourth Proportional to 1,433.70, 2,150.82 and 459.90

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Solution

The fourth proportional to 1,433.70, 2,150.82 and 459.90 is: 689.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433.70 : 2,150.82 = 459.90 : x
  2. Step 2: Convert to fraction form
    1,433.70/2,150.82 = 459.90/x
  3. Step 3: Cross multiply
    1,433.70x = 2,150.82 × 459.90
  4. Step 4: Simplify right side
    1,433.70x = 989,162.12
  5. Step 5: Solve for x
    x = 989,162.12/1,433.70
  6. Step 6: Final answer
    x = 689.94

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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.