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Finding the Fourth Proportional to 519.45, 717.08 and 333.20

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Solution

The fourth proportional to 519.45, 717.08 and 333.20 is: 459.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    519.45 : 717.08 = 333.20 : x
  2. Step 2: Convert to fraction form
    519.45/717.08 = 333.20/x
  3. Step 3: Cross multiply
    519.45x = 717.08 × 333.20
  4. Step 4: Simplify right side
    519.45x = 238,925.80
  5. Step 5: Solve for x
    x = 238,925.80/519.45
  6. Step 6: Final answer
    x = 459.96

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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.