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Finding the Fourth Proportional to 518.27, 776.84 and 240.34

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Solution

The fourth proportional to 518.27, 776.84 and 240.34 is: 360.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.27 : 776.84 = 240.34 : x
  2. Step 2: Convert to fraction form
    518.27/776.84 = 240.34/x
  3. Step 3: Cross multiply
    518.27x = 776.84 × 240.34
  4. Step 4: Simplify right side
    518.27x = 186,707.58
  5. Step 5: Solve for x
    x = 186,707.58/518.27
  6. Step 6: Final answer
    x = 360.25

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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.