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Finding the Fourth Proportional to 669.22, 923.89 and 459.52

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Solution

The fourth proportional to 669.22, 923.89 and 459.52 is: 634.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.22 : 923.89 = 459.52 : x
  2. Step 2: Convert to fraction form
    669.22/923.89 = 459.52/x
  3. Step 3: Cross multiply
    669.22x = 923.89 × 459.52
  4. Step 4: Simplify right side
    669.22x = 424,541.31
  5. Step 5: Solve for x
    x = 424,541.31/669.22
  6. Step 6: Final answer
    x = 634.39

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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.