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Finding the Fourth Proportional to 739.33, 1,020.25 and 444.54

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Solution

The fourth proportional to 739.33, 1,020.25 and 444.54 is: 613.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    739.33 : 1,020.25 = 444.54 : x
  2. Step 2: Convert to fraction form
    739.33/1,020.25 = 444.54/x
  3. Step 3: Cross multiply
    739.33x = 1,020.25 × 444.54
  4. Step 4: Simplify right side
    739.33x = 453,541.94
  5. Step 5: Solve for x
    x = 453,541.94/739.33
  6. Step 6: Final answer
    x = 613.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.