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Finding the Fourth Proportional to 519.35, 779.02 and 328.19

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Solution

The fourth proportional to 519.35, 779.02 and 328.19 is: 492.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    519.35 : 779.02 = 328.19 : x
  2. Step 2: Convert to fraction form
    519.35/779.02 = 328.19/x
  3. Step 3: Cross multiply
    519.35x = 779.02 × 328.19
  4. Step 4: Simplify right side
    519.35x = 255,661.86
  5. Step 5: Solve for x
    x = 255,661.86/519.35
  6. Step 6: Final answer
    x = 492.28

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Double scale
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Similar ratio
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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.