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Finding the Fourth Proportional to 591.72, 816.48 and 329.70

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Solution

The fourth proportional to 591.72, 816.48 and 329.70 is: 454.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.72 : 816.48 = 329.70 : x
  2. Step 2: Convert to fraction form
    591.72/816.48 = 329.70/x
  3. Step 3: Cross multiply
    591.72x = 816.48 × 329.70
  4. Step 4: Simplify right side
    591.72x = 269,193.46
  5. Step 5: Solve for x
    x = 269,193.46/591.72
  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.