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Finding the Fourth Proportional to 624.62, 936.91 and 162.39

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Solution

The fourth proportional to 624.62, 936.91 and 162.39 is: 243.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.62 : 936.91 = 162.39 : x
  2. Step 2: Convert to fraction form
    624.62/936.91 = 162.39/x
  3. Step 3: Cross multiply
    624.62x = 936.91 × 162.39
  4. Step 4: Simplify right side
    624.62x = 152,144.81
  5. Step 5: Solve for x
    x = 152,144.81/624.62
  6. Step 6: Final answer
    x = 243.58

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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.