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Finding the Fourth Proportional to 519.03, 778.55 and 356.22

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Solution

The fourth proportional to 519.03, 778.55 and 356.22 is: 534.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    519.03 : 778.55 = 356.22 : x
  2. Step 2: Convert to fraction form
    519.03/778.55 = 356.22/x
  3. Step 3: Cross multiply
    519.03x = 778.55 × 356.22
  4. Step 4: Simplify right side
    519.03x = 277,333.30
  5. Step 5: Solve for x
    x = 277,333.30/519.03
  6. Step 6: Final answer
    x = 534.33

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Double scale
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Similar ratio
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1.5x scale

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.