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Finding the Fourth Proportional to 669.70, 923.68 and 483.81

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Solution

The fourth proportional to 669.70, 923.68 and 483.81 is: 667.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.70 : 923.68 = 483.81 : x
  2. Step 2: Convert to fraction form
    669.70/923.68 = 483.81/x
  3. Step 3: Cross multiply
    669.70x = 923.68 × 483.81
  4. Step 4: Simplify right side
    669.70x = 446,885.62
  5. Step 5: Solve for x
    x = 446,885.62/669.70
  6. Step 6: Final answer
    x = 667.29

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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.