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Finding the Fourth Proportional to 519.07, 716.30 and 298.04

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Solution

The fourth proportional to 519.07, 716.30 and 298.04 is: 411.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    519.07 : 716.30 = 298.04 : x
  2. Step 2: Convert to fraction form
    519.07/716.30 = 298.04/x
  3. Step 3: Cross multiply
    519.07x = 716.30 × 298.04
  4. Step 4: Simplify right side
    519.07x = 213,484.56
  5. Step 5: Solve for x
    x = 213,484.56/519.07
  6. Step 6: Final answer
    x = 411.28

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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.