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Finding the Fourth Proportional to 412.70, 619.18 and 250.49

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Solution

The fourth proportional to 412.70, 619.18 and 250.49 is: 375.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    412.70 : 619.18 = 250.49 : x
  2. Step 2: Convert to fraction form
    412.70/619.18 = 250.49/x
  3. Step 3: Cross multiply
    412.70x = 619.18 × 250.49
  4. Step 4: Simplify right side
    412.70x = 155,099.32
  5. Step 5: Solve for x
    x = 155,099.32/412.70
  6. Step 6: Final answer
    x = 375.82

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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.