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Finding the Fourth Proportional to 624.07, 936.78 and 331.93

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Solution

The fourth proportional to 624.07, 936.78 and 331.93 is: 498.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.07 : 936.78 = 331.93 : x
  2. Step 2: Convert to fraction form
    624.07/936.78 = 331.93/x
  3. Step 3: Cross multiply
    624.07x = 936.78 × 331.93
  4. Step 4: Simplify right side
    624.07x = 310,945.39
  5. Step 5: Solve for x
    x = 310,945.39/624.07
  6. Step 6: Final answer
    x = 498.25

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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.