Home / 1,245.94-1,868.56-465.90

Finding the Fourth Proportional to 1,245.94, 1,868.56 and 465.90

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Solution

The fourth proportional to 1,245.94, 1,868.56 and 465.90 is: 698.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.94 : 1,868.56 = 465.90 : x
  2. Step 2: Convert to fraction form
    1,245.94/1,868.56 = 465.90/x
  3. Step 3: Cross multiply
    1,245.94x = 1,868.56 × 465.90
  4. Step 4: Simplify right side
    1,245.94x = 870,562.10
  5. Step 5: Solve for x
    x = 870,562.10/1,245.94
  6. Step 6: Final answer
    x = 698.72

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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.