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Finding the Fourth Proportional to 631.44, 940.12 and 622.34

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Solution

The fourth proportional to 631.44, 940.12 and 622.34 is: 926.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.44 : 940.12 = 622.34 : x
  2. Step 2: Convert to fraction form
    631.44/940.12 = 622.34/x
  3. Step 3: Cross multiply
    631.44x = 940.12 × 622.34
  4. Step 4: Simplify right side
    631.44x = 585,068.02
  5. Step 5: Solve for x
    x = 585,068.02/631.44
  6. Step 6: Final answer
    x = 926.56

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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.