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Finding the Fourth Proportional to 578.70, 871.50 and 482.13

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Solution

The fourth proportional to 578.70, 871.50 and 482.13 is: 726.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.70 : 871.50 = 482.13 : x
  2. Step 2: Convert to fraction form
    578.70/871.50 = 482.13/x
  3. Step 3: Cross multiply
    578.70x = 871.50 × 482.13
  4. Step 4: Simplify right side
    578.70x = 420,176.30
  5. Step 5: Solve for x
    x = 420,176.30/578.70
  6. Step 6: Final answer
    x = 726.07

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.