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Finding the Fourth Proportional to 624.39, 936.36 and 234.30

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Solution

The fourth proportional to 624.39, 936.36 and 234.30 is: 351.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.39 : 936.36 = 234.30 : x
  2. Step 2: Convert to fraction form
    624.39/936.36 = 234.30/x
  3. Step 3: Cross multiply
    624.39x = 936.36 × 234.30
  4. Step 4: Simplify right side
    624.39x = 219,389.15
  5. Step 5: Solve for x
    x = 219,389.15/624.39
  6. Step 6: Final answer
    x = 351.37

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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.