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Finding the Fourth Proportional to 386.86, 579.52 and 240.26

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Solution

The fourth proportional to 386.86, 579.52 and 240.26 is: 359.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    386.86 : 579.52 = 240.26 : x
  2. Step 2: Convert to fraction form
    386.86/579.52 = 240.26/x
  3. Step 3: Cross multiply
    386.86x = 579.52 × 240.26
  4. Step 4: Simplify right side
    386.86x = 139,234.27
  5. Step 5: Solve for x
    x = 139,234.27/386.86
  6. Step 6: Final answer
    x = 359.91

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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.