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Finding the Fourth Proportional to 671.06, 926.17 and 409.23

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Solution

The fourth proportional to 671.06, 926.17 and 409.23 is: 564.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.06 : 926.17 = 409.23 : x
  2. Step 2: Convert to fraction form
    671.06/926.17 = 409.23/x
  3. Step 3: Cross multiply
    671.06x = 926.17 × 409.23
  4. Step 4: Simplify right side
    671.06x = 379,015.53
  5. Step 5: Solve for x
    x = 379,015.53/671.06
  6. Step 6: Final answer
    x = 564.80

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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.