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Finding the Fourth Proportional to 519.21, 716.45 and 332.74

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Solution

The fourth proportional to 519.21, 716.45 and 332.74 is: 459.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    519.21 : 716.45 = 332.74 : x
  2. Step 2: Convert to fraction form
    519.21/716.45 = 332.74/x
  3. Step 3: Cross multiply
    519.21x = 716.45 × 332.74
  4. Step 4: Simplify right side
    519.21x = 238,390.80
  5. Step 5: Solve for x
    x = 238,390.80/519.21
  6. Step 6: Final answer
    x = 459.14

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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.