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Finding the Fourth Proportional to 620.97, 930.97 and 484.30

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Solution

The fourth proportional to 620.97, 930.97 and 484.30 is: 726.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.97 : 930.97 = 484.30 : x
  2. Step 2: Convert to fraction form
    620.97/930.97 = 484.30/x
  3. Step 3: Cross multiply
    620.97x = 930.97 × 484.30
  4. Step 4: Simplify right side
    620.97x = 450,868.77
  5. Step 5: Solve for x
    x = 450,868.77/620.97
  6. Step 6: Final answer
    x = 726.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.