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Finding the Fourth Proportional to 344.86, 517.60 and 308.24

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Solution

The fourth proportional to 344.86, 517.60 and 308.24 is: 462.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.86 : 517.60 = 308.24 : x
  2. Step 2: Convert to fraction form
    344.86/517.60 = 308.24/x
  3. Step 3: Cross multiply
    344.86x = 517.60 × 308.24
  4. Step 4: Simplify right side
    344.86x = 159,545.02
  5. Step 5: Solve for x
    x = 159,545.02/344.86
  6. Step 6: Final answer
    x = 462.64

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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.