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Finding the Fourth Proportional to 622.66, 927.98 and 617.56

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Solution

The fourth proportional to 622.66, 927.98 and 617.56 is: 920.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.66 : 927.98 = 617.56 : x
  2. Step 2: Convert to fraction form
    622.66/927.98 = 617.56/x
  3. Step 3: Cross multiply
    622.66x = 927.98 × 617.56
  4. Step 4: Simplify right side
    622.66x = 573,083.33
  5. Step 5: Solve for x
    x = 573,083.33/622.66
  6. Step 6: Final answer
    x = 920.38

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.