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Finding the Fourth Proportional to 617.94, 926.91 and 252.65

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Solution

The fourth proportional to 617.94, 926.91 and 252.65 is: 378.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.94 : 926.91 = 252.65 : x
  2. Step 2: Convert to fraction form
    617.94/926.91 = 252.65/x
  3. Step 3: Cross multiply
    617.94x = 926.91 × 252.65
  4. Step 4: Simplify right side
    617.94x = 234,183.81
  5. Step 5: Solve for x
    x = 234,183.81/617.94
  6. Step 6: Final answer
    x = 378.98

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Half scale
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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.