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Finding the Fourth Proportional to 589.21, 884.07 and 281.06

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Solution

The fourth proportional to 589.21, 884.07 and 281.06 is: 421.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.21 : 884.07 = 281.06 : x
  2. Step 2: Convert to fraction form
    589.21/884.07 = 281.06/x
  3. Step 3: Cross multiply
    589.21x = 884.07 × 281.06
  4. Step 4: Simplify right side
    589.21x = 248,476.71
  5. Step 5: Solve for x
    x = 248,476.71/589.21
  6. Step 6: Final answer
    x = 421.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.