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Finding the Fourth Proportional to 519.41, 779.12 and 259.02

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Solution

The fourth proportional to 519.41, 779.12 and 259.02 is: 388.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    519.41 : 779.12 = 259.02 : x
  2. Step 2: Convert to fraction form
    519.41/779.12 = 259.02/x
  3. Step 3: Cross multiply
    519.41x = 779.12 × 259.02
  4. Step 4: Simplify right side
    519.41x = 201,809.53
  5. Step 5: Solve for x
    x = 201,809.53/519.41
  6. Step 6: Final answer
    x = 388.53

Related Problems

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Half scale
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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.