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Finding the Fourth Proportional to 667.19, 993.73 and 632.49

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Solution

The fourth proportional to 667.19, 993.73 and 632.49 is: 942.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    667.19 : 993.73 = 632.49 : x
  2. Step 2: Convert to fraction form
    667.19/993.73 = 632.49/x
  3. Step 3: Cross multiply
    667.19x = 993.73 × 632.49
  4. Step 4: Simplify right side
    667.19x = 628,524.29
  5. Step 5: Solve for x
    x = 628,524.29/667.19
  6. Step 6: Final answer
    x = 942.05

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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.