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Finding the Fourth Proportional to 685.97, 946.80 and 575.27

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Solution

The fourth proportional to 685.97, 946.80 and 575.27 is: 794.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    685.97 : 946.80 = 575.27 : x
  2. Step 2: Convert to fraction form
    685.97/946.80 = 575.27/x
  3. Step 3: Cross multiply
    685.97x = 946.80 × 575.27
  4. Step 4: Simplify right side
    685.97x = 544,660.90
  5. Step 5: Solve for x
    x = 544,660.90/685.97
  6. Step 6: Final answer
    x = 794.01

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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.