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Finding the Fourth Proportional to 519.48, 716.68 and 298.32

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Solution

The fourth proportional to 519.48, 716.68 and 298.32 is: 411.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    519.48 : 716.68 = 298.32 : x
  2. Step 2: Convert to fraction form
    519.48/716.68 = 298.32/x
  3. Step 3: Cross multiply
    519.48x = 716.68 × 298.32
  4. Step 4: Simplify right side
    519.48x = 213,797.66
  5. Step 5: Solve for x
    x = 213,797.66/519.48
  6. Step 6: Final answer
    x = 411.56

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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.