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Finding the Fourth Proportional to 516.53, 774.87 and 272.99

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Solution

The fourth proportional to 516.53, 774.87 and 272.99 is: 409.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    516.53 : 774.87 = 272.99 : x
  2. Step 2: Convert to fraction form
    516.53/774.87 = 272.99/x
  3. Step 3: Cross multiply
    516.53x = 774.87 × 272.99
  4. Step 4: Simplify right side
    516.53x = 211,531.76
  5. Step 5: Solve for x
    x = 211,531.76/516.53
  6. Step 6: Final answer
    x = 409.52

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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.