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Finding the Fourth Proportional to 669.28, 923.70 and 483.37

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Solution

The fourth proportional to 669.28, 923.70 and 483.37 is: 667.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.28 : 923.70 = 483.37 : x
  2. Step 2: Convert to fraction form
    669.28/923.70 = 483.37/x
  3. Step 3: Cross multiply
    669.28x = 923.70 × 483.37
  4. Step 4: Simplify right side
    669.28x = 446,488.87
  5. Step 5: Solve for x
    x = 446,488.87/669.28
  6. Step 6: Final answer
    x = 667.12

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Double scale
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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.