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Finding the Fourth Proportional to 617.75, 926.52 and 206.90

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Solution

The fourth proportional to 617.75, 926.52 and 206.90 is: 310.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.75 : 926.52 = 206.90 : x
  2. Step 2: Convert to fraction form
    617.75/926.52 = 206.90/x
  3. Step 3: Cross multiply
    617.75x = 926.52 × 206.90
  4. Step 4: Simplify right side
    617.75x = 191,696.99
  5. Step 5: Solve for x
    x = 191,696.99/617.75
  6. Step 6: Final answer
    x = 310.31

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1.5x scale

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.