Home / 1,383.14-2,074.49-458.66

Finding the Fourth Proportional to 1,383.14, 2,074.49 and 458.66

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Solution

The fourth proportional to 1,383.14, 2,074.49 and 458.66 is: 687.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383.14 : 2,074.49 = 458.66 : x
  2. Step 2: Convert to fraction form
    1,383.14/2,074.49 = 458.66/x
  3. Step 3: Cross multiply
    1,383.14x = 2,074.49 × 458.66
  4. Step 4: Simplify right side
    1,383.14x = 951,472.92
  5. Step 5: Solve for x
    x = 951,472.92/1,383.14
  6. Step 6: Final answer
    x = 687.91

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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.