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Finding the Fourth Proportional to 667.93, 922.68 and 632.90

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Solution

The fourth proportional to 667.93, 922.68 and 632.90 is: 874.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    667.93 : 922.68 = 632.90 : x
  2. Step 2: Convert to fraction form
    667.93/922.68 = 632.90/x
  3. Step 3: Cross multiply
    667.93x = 922.68 × 632.90
  4. Step 4: Simplify right side
    667.93x = 583,961.01
  5. Step 5: Solve for x
    x = 583,961.01/667.93
  6. Step 6: Final answer
    x = 874.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.