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Finding the Fourth Proportional to 685.22, 945.07 and 606.62

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Solution

The fourth proportional to 685.22, 945.07 and 606.62 is: 836.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    685.22 : 945.07 = 606.62 : x
  2. Step 2: Convert to fraction form
    685.22/945.07 = 606.62/x
  3. Step 3: Cross multiply
    685.22x = 945.07 × 606.62
  4. Step 4: Simplify right side
    685.22x = 573,298.36
  5. Step 5: Solve for x
    x = 573,298.36/685.22
  6. Step 6: Final answer
    x = 836.66

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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.