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Finding the Fourth Proportional to 589.70, 813.81 and 327.72

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Solution

The fourth proportional to 589.70, 813.81 and 327.72 is: 452.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.70 : 813.81 = 327.72 : x
  2. Step 2: Convert to fraction form
    589.70/813.81 = 327.72/x
  3. Step 3: Cross multiply
    589.70x = 813.81 × 327.72
  4. Step 4: Simplify right side
    589.70x = 266,701.81
  5. Step 5: Solve for x
    x = 266,701.81/589.70
  6. Step 6: Final answer
    x = 452.27

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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.