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Finding the Fourth Proportional to 671.56, 926.73 and 372.79

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Solution

The fourth proportional to 671.56, 926.73 and 372.79 is: 514.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.56 : 926.73 = 372.79 : x
  2. Step 2: Convert to fraction form
    671.56/926.73 = 372.79/x
  3. Step 3: Cross multiply
    671.56x = 926.73 × 372.79
  4. Step 4: Simplify right side
    671.56x = 345,478.93
  5. Step 5: Solve for x
    x = 345,478.93/671.56
  6. Step 6: Final answer
    x = 514.45

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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.