Home / 1,224.55-1,836.25-444.45

Finding the Fourth Proportional to 1,224.55, 1,836.25 and 444.45

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Solution

The fourth proportional to 1,224.55, 1,836.25 and 444.45 is: 666.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224.55 : 1,836.25 = 444.45 : x
  2. Step 2: Convert to fraction form
    1,224.55/1,836.25 = 444.45/x
  3. Step 3: Cross multiply
    1,224.55x = 1,836.25 × 444.45
  4. Step 4: Simplify right side
    1,224.55x = 816,121.31
  5. Step 5: Solve for x
    x = 816,121.31/1,224.55
  6. Step 6: Final answer
    x = 666.47

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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.