Home / 1,242.25-1,863.45-376.57

Finding the Fourth Proportional to 1,242.25, 1,863.45 and 376.57

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Solution

The fourth proportional to 1,242.25, 1,863.45 and 376.57 is: 564.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242.25 : 1,863.45 = 376.57 : x
  2. Step 2: Convert to fraction form
    1,242.25/1,863.45 = 376.57/x
  3. Step 3: Cross multiply
    1,242.25x = 1,863.45 × 376.57
  4. Step 4: Simplify right side
    1,242.25x = 701,719.37
  5. Step 5: Solve for x
    x = 701,719.37/1,242.25
  6. Step 6: Final answer
    x = 564.88

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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.