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Finding the Fourth Proportional to 578.60, 798.76 and 379.52

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Solution

The fourth proportional to 578.60, 798.76 and 379.52 is: 523.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.60 : 798.76 = 379.52 : x
  2. Step 2: Convert to fraction form
    578.60/798.76 = 379.52/x
  3. Step 3: Cross multiply
    578.60x = 798.76 × 379.52
  4. Step 4: Simplify right side
    578.60x = 303,145.40
  5. Step 5: Solve for x
    x = 303,145.40/578.60
  6. Step 6: Final answer
    x = 523.93

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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.