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Finding the Fourth Proportional to 669.50, 923.96 and 374.79

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Solution

The fourth proportional to 669.50, 923.96 and 374.79 is: 517.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.50 : 923.96 = 374.79 : x
  2. Step 2: Convert to fraction form
    669.50/923.96 = 374.79/x
  3. Step 3: Cross multiply
    669.50x = 923.96 × 374.79
  4. Step 4: Simplify right side
    669.50x = 346,289.09
  5. Step 5: Solve for x
    x = 346,289.09/669.50
  6. Step 6: Final answer
    x = 517.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.