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Finding the Fourth Proportional to 737.97, 1,018.41 and 406.39

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Solution

The fourth proportional to 737.97, 1,018.41 and 406.39 is: 560.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.97 : 1,018.41 = 406.39 : x
  2. Step 2: Convert to fraction form
    737.97/1,018.41 = 406.39/x
  3. Step 3: Cross multiply
    737.97x = 1,018.41 × 406.39
  4. Step 4: Simplify right side
    737.97x = 413,869.09
  5. Step 5: Solve for x
    x = 413,869.09/737.97
  6. Step 6: Final answer
    x = 560.82

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1.5x scale

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.