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Finding the Fourth Proportional to 624.09, 936.04 and 440.93

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Solution

The fourth proportional to 624.09, 936.04 and 440.93 is: 661.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.09 : 936.04 = 440.93 : x
  2. Step 2: Convert to fraction form
    624.09/936.04 = 440.93/x
  3. Step 3: Cross multiply
    624.09x = 936.04 × 440.93
  4. Step 4: Simplify right side
    624.09x = 412,728.12
  5. Step 5: Solve for x
    x = 412,728.12/624.09
  6. Step 6: Final answer
    x = 661.33

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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.