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Finding the Fourth Proportional to 479.05, 719.60 and 342.97

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Solution

The fourth proportional to 479.05, 719.60 and 342.97 is: 515.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.05 : 719.60 = 342.97 : x
  2. Step 2: Convert to fraction form
    479.05/719.60 = 342.97/x
  3. Step 3: Cross multiply
    479.05x = 719.60 × 342.97
  4. Step 4: Simplify right side
    479.05x = 246,797.70
  5. Step 5: Solve for x
    x = 246,797.70/479.05
  6. Step 6: Final answer
    x = 515.18

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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.