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Finding the Fourth Proportional to 617.33, 926.15 and 206.47

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Solution

The fourth proportional to 617.33, 926.15 and 206.47 is: 309.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.33 : 926.15 = 206.47 : x
  2. Step 2: Convert to fraction form
    617.33/926.15 = 206.47/x
  3. Step 3: Cross multiply
    617.33x = 926.15 × 206.47
  4. Step 4: Simplify right side
    617.33x = 191,222.19
  5. Step 5: Solve for x
    x = 191,222.19/617.33
  6. Step 6: Final answer
    x = 309.76

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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.