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Finding the Fourth Proportional to 517.50, 776.36 and 273.96

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Solution

The fourth proportional to 517.50, 776.36 and 273.96 is: 411.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.50 : 776.36 = 273.96 : x
  2. Step 2: Convert to fraction form
    517.50/776.36 = 273.96/x
  3. Step 3: Cross multiply
    517.50x = 776.36 × 273.96
  4. Step 4: Simplify right side
    517.50x = 212,690.22
  5. Step 5: Solve for x
    x = 212,690.22/517.50
  6. Step 6: Final answer
    x = 411.00

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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.