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Finding the Fourth Proportional to 617.58, 926.40 and 206.73

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Solution

The fourth proportional to 617.58, 926.40 and 206.73 is: 310.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.58 : 926.40 = 206.73 : x
  2. Step 2: Convert to fraction form
    617.58/926.40 = 206.73/x
  3. Step 3: Cross multiply
    617.58x = 926.40 × 206.73
  4. Step 4: Simplify right side
    617.58x = 191,513.64
  5. Step 5: Solve for x
    x = 191,513.64/617.58
  6. Step 6: Final answer
    x = 310.10

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Double scale
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Similar ratio
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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.