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Finding the Fourth Proportional to 669.24, 923.55 and 374.52

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Solution

The fourth proportional to 669.24, 923.55 and 374.52 is: 516.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.24 : 923.55 = 374.52 : x
  2. Step 2: Convert to fraction form
    669.24/923.55 = 374.52/x
  3. Step 3: Cross multiply
    669.24x = 923.55 × 374.52
  4. Step 4: Simplify right side
    669.24x = 345,892.11
  5. Step 5: Solve for x
    x = 345,892.11/669.24
  6. Step 6: Final answer
    x = 516.85

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1.5x scale

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.