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Finding the Fourth Proportional to 739.41, 1,020.51 and 444.71

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Solution

The fourth proportional to 739.41, 1,020.51 and 444.71 is: 613.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    739.41 : 1,020.51 = 444.71 : x
  2. Step 2: Convert to fraction form
    739.41/1,020.51 = 444.71/x
  3. Step 3: Cross multiply
    739.41x = 1,020.51 × 444.71
  4. Step 4: Simplify right side
    739.41x = 453,825.90
  5. Step 5: Solve for x
    x = 453,825.90/739.41
  6. Step 6: Final answer
    x = 613.77

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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.