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Finding the Fourth Proportional to 517.48, 776.32 and 243.88

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Solution

The fourth proportional to 517.48, 776.32 and 243.88 is: 365.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.48 : 776.32 = 243.88 : x
  2. Step 2: Convert to fraction form
    517.48/776.32 = 243.88/x
  3. Step 3: Cross multiply
    517.48x = 776.32 × 243.88
  4. Step 4: Simplify right side
    517.48x = 189,328.92
  5. Step 5: Solve for x
    x = 189,328.92/517.48
  6. Step 6: Final answer
    x = 365.87

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.