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Finding the Fourth Proportional to 667.06, 994.39 and 630.58

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Solution

The fourth proportional to 667.06, 994.39 and 630.58 is: 940.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    667.06 : 994.39 = 630.58 : x
  2. Step 2: Convert to fraction form
    667.06/994.39 = 630.58/x
  3. Step 3: Cross multiply
    667.06x = 994.39 × 630.58
  4. Step 4: Simplify right side
    667.06x = 627,042.45
  5. Step 5: Solve for x
    x = 627,042.45/667.06
  6. Step 6: Final answer
    x = 940.01

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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.