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Finding the Fourth Proportional to 671.27, 926.01 and 422.12

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Solution

The fourth proportional to 671.27, 926.01 and 422.12 is: 582.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.27 : 926.01 = 422.12 : x
  2. Step 2: Convert to fraction form
    671.27/926.01 = 422.12/x
  3. Step 3: Cross multiply
    671.27x = 926.01 × 422.12
  4. Step 4: Simplify right side
    671.27x = 390,888.07
  5. Step 5: Solve for x
    x = 390,888.07/671.27
  6. Step 6: Final answer
    x = 582.31

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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.