Home / 1,434.38-2,150.20-459.81

Finding the Fourth Proportional to 1,434.38, 2,150.20 and 459.81

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Solution

The fourth proportional to 1,434.38, 2,150.20 and 459.81 is: 689.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434.38 : 2,150.20 = 459.81 : x
  2. Step 2: Convert to fraction form
    1,434.38/2,150.20 = 459.81/x
  3. Step 3: Cross multiply
    1,434.38x = 2,150.20 × 459.81
  4. Step 4: Simplify right side
    1,434.38x = 988,692.10
  5. Step 5: Solve for x
    x = 988,692.10/1,434.38
  6. Step 6: Final answer
    x = 689.28

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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.