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Finding the Fourth Proportional to 622.76, 940.94 and 616.82

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Solution

The fourth proportional to 622.76, 940.94 and 616.82 is: 931.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.76 : 940.94 = 616.82 : x
  2. Step 2: Convert to fraction form
    622.76/940.94 = 616.82/x
  3. Step 3: Cross multiply
    622.76x = 940.94 × 616.82
  4. Step 4: Simplify right side
    622.76x = 580,390.61
  5. Step 5: Solve for x
    x = 580,390.61/622.76
  6. Step 6: Final answer
    x = 931.97

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.