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Finding the Fourth Proportional to 617.68, 926.67 and 371.11

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Solution

The fourth proportional to 617.68, 926.67 and 371.11 is: 556.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.68 : 926.67 = 371.11 : x
  2. Step 2: Convert to fraction form
    617.68/926.67 = 371.11/x
  3. Step 3: Cross multiply
    617.68x = 926.67 × 371.11
  4. Step 4: Simplify right side
    617.68x = 343,891.58
  5. Step 5: Solve for x
    x = 343,891.58/617.68
  6. Step 6: Final answer
    x = 556.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.