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Finding the Fourth Proportional to 671.18, 926.23 and 372.43

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Solution

The fourth proportional to 671.18, 926.23 and 372.43 is: 513.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.18 : 926.23 = 372.43 : x
  2. Step 2: Convert to fraction form
    671.18/926.23 = 372.43/x
  3. Step 3: Cross multiply
    671.18x = 926.23 × 372.43
  4. Step 4: Simplify right side
    671.18x = 344,956.77
  5. Step 5: Solve for x
    x = 344,956.77/671.18
  6. Step 6: Final answer
    x = 513.96

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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.