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Finding the Fourth Proportional to 591.63, 816.49 and 329.65

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Solution

The fourth proportional to 591.63, 816.49 and 329.65 is: 454.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.63 : 816.49 = 329.65 : x
  2. Step 2: Convert to fraction form
    591.63/816.49 = 329.65/x
  3. Step 3: Cross multiply
    591.63x = 816.49 × 329.65
  4. Step 4: Simplify right side
    591.63x = 269,153.37
  5. Step 5: Solve for x
    x = 269,153.37/591.63
  6. Step 6: Final answer
    x = 454.93

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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.