Home / 1,225.33-1,838.30-669.77

Finding the Fourth Proportional to 1,225.33, 1,838.30 and 669.77

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Solution

The fourth proportional to 1,225.33, 1,838.30 and 669.77 is: 1,004.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225.33 : 1,838.30 = 669.77 : x
  2. Step 2: Convert to fraction form
    1,225.33/1,838.30 = 669.77/x
  3. Step 3: Cross multiply
    1,225.33x = 1,838.30 × 669.77
  4. Step 4: Simplify right side
    1,225.33x = 1,231,232.54
  5. Step 5: Solve for x
    x = 1,231,232.54/1,225.33
  6. Step 6: Final answer
    x = 1,004.82

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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.