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Finding the Fourth Proportional to 624.92, 936.34 and 380.75

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Solution

The fourth proportional to 624.92, 936.34 and 380.75 is: 570.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.92 : 936.34 = 380.75 : x
  2. Step 2: Convert to fraction form
    624.92/936.34 = 380.75/x
  3. Step 3: Cross multiply
    624.92x = 936.34 × 380.75
  4. Step 4: Simplify right side
    624.92x = 356,505.82
  5. Step 5: Solve for x
    x = 356,505.82/624.92
  6. Step 6: Final answer
    x = 570.49

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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.