Home / 1,224.88-1,837.40-455.12

Finding the Fourth Proportional to 1,224.88, 1,837.40 and 455.12

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Solution

The fourth proportional to 1,224.88, 1,837.40 and 455.12 is: 682.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224.88 : 1,837.40 = 455.12 : x
  2. Step 2: Convert to fraction form
    1,224.88/1,837.40 = 455.12/x
  3. Step 3: Cross multiply
    1,224.88x = 1,837.40 × 455.12
  4. Step 4: Simplify right side
    1,224.88x = 836,237.49
  5. Step 5: Solve for x
    x = 836,237.49/1,224.88
  6. Step 6: Final answer
    x = 682.71

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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.