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Finding the Fourth Proportional to 480.11, 719.57 and 274.77

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Solution

The fourth proportional to 480.11, 719.57 and 274.77 is: 411.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.11 : 719.57 = 274.77 : x
  2. Step 2: Convert to fraction form
    480.11/719.57 = 274.77/x
  3. Step 3: Cross multiply
    480.11x = 719.57 × 274.77
  4. Step 4: Simplify right side
    480.11x = 197,716.94
  5. Step 5: Solve for x
    x = 197,716.94/480.11
  6. Step 6: Final answer
    x = 411.82

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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.