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Finding the Fourth Proportional to 671.31, 926.49 and 376.60

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Solution

The fourth proportional to 671.31, 926.49 and 376.60 is: 519.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.31 : 926.49 = 376.60 : x
  2. Step 2: Convert to fraction form
    671.31/926.49 = 376.60/x
  3. Step 3: Cross multiply
    671.31x = 926.49 × 376.60
  4. Step 4: Simplify right side
    671.31x = 348,916.13
  5. Step 5: Solve for x
    x = 348,916.13/671.31
  6. Step 6: Final answer
    x = 519.75

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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.