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Finding the Fourth Proportional to 591.38, 816.06 and 325.79

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Solution

The fourth proportional to 591.38, 816.06 and 325.79 is: 449.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.38 : 816.06 = 325.79 : x
  2. Step 2: Convert to fraction form
    591.38/816.06 = 325.79/x
  3. Step 3: Cross multiply
    591.38x = 816.06 × 325.79
  4. Step 4: Simplify right side
    591.38x = 265,864.19
  5. Step 5: Solve for x
    x = 265,864.19/591.38
  6. Step 6: Final answer
    x = 449.57

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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.