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Finding the Fourth Proportional to 669.59, 923.85 and 459.82

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Solution

The fourth proportional to 669.59, 923.85 and 459.82 is: 634.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.59 : 923.85 = 459.82 : x
  2. Step 2: Convert to fraction form
    669.59/923.85 = 459.82/x
  3. Step 3: Cross multiply
    669.59x = 923.85 × 459.82
  4. Step 4: Simplify right side
    669.59x = 424,804.71
  5. Step 5: Solve for x
    x = 424,804.71/669.59
  6. Step 6: Final answer
    x = 634.43

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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.