Home / 1,224.50-1,836.56-402.79

Finding the Fourth Proportional to 1,224.50, 1,836.56 and 402.79

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Solution

The fourth proportional to 1,224.50, 1,836.56 and 402.79 is: 604.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224.50 : 1,836.56 = 402.79 : x
  2. Step 2: Convert to fraction form
    1,224.50/1,836.56 = 402.79/x
  3. Step 3: Cross multiply
    1,224.50x = 1,836.56 × 402.79
  4. Step 4: Simplify right side
    1,224.50x = 739,736.81
  5. Step 5: Solve for x
    x = 739,736.81/1,224.50
  6. Step 6: Final answer
    x = 604.12

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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.