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Finding the Fourth Proportional to 622.56, 926.52 and 620.64

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Solution

The fourth proportional to 622.56, 926.52 and 620.64 is: 923.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.56 : 926.52 = 620.64 : x
  2. Step 2: Convert to fraction form
    622.56/926.52 = 620.64/x
  3. Step 3: Cross multiply
    622.56x = 926.52 × 620.64
  4. Step 4: Simplify right side
    622.56x = 575,035.37
  5. Step 5: Solve for x
    x = 575,035.37/622.56
  6. Step 6: Final answer
    x = 923.66

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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.