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Finding the Fourth Proportional to 589.21, 882.91 and 458.90

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Solution

The fourth proportional to 589.21, 882.91 and 458.90 is: 687.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.21 : 882.91 = 458.90 : x
  2. Step 2: Convert to fraction form
    589.21/882.91 = 458.90/x
  3. Step 3: Cross multiply
    589.21x = 882.91 × 458.90
  4. Step 4: Simplify right side
    589.21x = 405,167.40
  5. Step 5: Solve for x
    x = 405,167.40/589.21
  6. Step 6: Final answer
    x = 687.65

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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.