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Finding the Fourth Proportional to 623.97, 936.33 and 253.71

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Solution

The fourth proportional to 623.97, 936.33 and 253.71 is: 380.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.97 : 936.33 = 253.71 : x
  2. Step 2: Convert to fraction form
    623.97/936.33 = 253.71/x
  3. Step 3: Cross multiply
    623.97x = 936.33 × 253.71
  4. Step 4: Simplify right side
    623.97x = 237,556.28
  5. Step 5: Solve for x
    x = 237,556.28/623.97
  6. Step 6: Final answer
    x = 380.72

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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.