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Finding the Fourth Proportional to 617.92, 926.87 and 445.69

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Solution

The fourth proportional to 617.92, 926.87 and 445.69 is: 668.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.92 : 926.87 = 445.69 : x
  2. Step 2: Convert to fraction form
    617.92/926.87 = 445.69/x
  3. Step 3: Cross multiply
    617.92x = 926.87 × 445.69
  4. Step 4: Simplify right side
    617.92x = 413,097.80
  5. Step 5: Solve for x
    x = 413,097.80/617.92
  6. Step 6: Final answer
    x = 668.53

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Double scale
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Similar ratio
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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.