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Finding the Fourth Proportional to 519.50, 779.25 and 314.30

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Solution

The fourth proportional to 519.50, 779.25 and 314.30 is: 471.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    519.50 : 779.25 = 314.30 : x
  2. Step 2: Convert to fraction form
    519.50/779.25 = 314.30/x
  3. Step 3: Cross multiply
    519.50x = 779.25 × 314.30
  4. Step 4: Simplify right side
    519.50x = 244,918.28
  5. Step 5: Solve for x
    x = 244,918.28/519.50
  6. Step 6: Final answer
    x = 471.45

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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.