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Finding the Fourth Proportional to 669.02, 923.21 and 374.29

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Solution

The fourth proportional to 669.02, 923.21 and 374.29 is: 516.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.02 : 923.21 = 374.29 : x
  2. Step 2: Convert to fraction form
    669.02/923.21 = 374.29/x
  3. Step 3: Cross multiply
    669.02x = 923.21 × 374.29
  4. Step 4: Simplify right side
    669.02x = 345,541.78
  5. Step 5: Solve for x
    x = 345,541.78/669.02
  6. Step 6: Final answer
    x = 516.49

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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.