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Finding the Fourth Proportional to 374.85, 517.36 and 235.09

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Solution

The fourth proportional to 374.85, 517.36 and 235.09 is: 324.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.85 : 517.36 = 235.09 : x
  2. Step 2: Convert to fraction form
    374.85/517.36 = 235.09/x
  3. Step 3: Cross multiply
    374.85x = 517.36 × 235.09
  4. Step 4: Simplify right side
    374.85x = 121,626.75
  5. Step 5: Solve for x
    x = 121,626.75/374.85
  6. Step 6: Final answer
    x = 324.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.