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Finding the Fourth Proportional to 669.66, 923.43 and 484.03

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Solution

The fourth proportional to 669.66, 923.43 and 484.03 is: 667.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.66 : 923.43 = 484.03 : x
  2. Step 2: Convert to fraction form
    669.66/923.43 = 484.03/x
  3. Step 3: Cross multiply
    669.66x = 923.43 × 484.03
  4. Step 4: Simplify right side
    669.66x = 446,967.82
  5. Step 5: Solve for x
    x = 446,967.82/669.66
  6. Step 6: Final answer
    x = 667.45

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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.