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Finding the Fourth Proportional to 669.99, 923.64 and 459.83

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Solution

The fourth proportional to 669.99, 923.64 and 459.83 is: 633.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.99 : 923.64 = 459.83 : x
  2. Step 2: Convert to fraction form
    669.99/923.64 = 459.83/x
  3. Step 3: Cross multiply
    669.99x = 923.64 × 459.83
  4. Step 4: Simplify right side
    669.99x = 424,710.46
  5. Step 5: Solve for x
    x = 424,710.46/669.99
  6. Step 6: Final answer
    x = 633.91

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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.